Vulnerability-Lookup

UBUNTU-CVE-2025-64720 (CVE-2025-64720)

Vulnerability from osv_ubuntu – Published: 2025-11-25 00:15 – Updated: 2026-04-22 07:56 – Source website

Details

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From version 1.6.0 to before 1.6.51, an out-of-bounds read vulnerability exists in png_image_read_composite when processing palette images with PNG_FLAG_OPTIMIZE_ALPHA enabled. The palette compositing code in png_init_read_transformations incorrectly applies background compositing during premultiplication, violating the invariant component ≤ alpha × 257 required by the simplified PNG API. This issue has been patched in version 1.6.51.

Severity

7.1 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2025-64720	REPORT
	https://www.cve.org/CVERecord?id=CVE-2025-64720	REPORT
	https://github.com/pnggroup/libpng/security/advis…	REPORT
	https://github.com/pnggroup/libpng/issues/686	REPORT
	https://github.com/pnggroup/libpng/commit/08da33b…	REPORT
	https://www.openwall.com/lists/oss-security/2025/…	REPORT
	https://ubuntu.com/security/notices/USN-7924-1	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libpng16-16",
            "binary_version": "1.6.20-2ubuntu0.1~esm2"
          },
          {
            "binary_name": "libpng16-devtools",
            "binary_version": "1.6.20-2ubuntu0.1~esm2"
          },
          {
            "binary_name": "libpng16-tools",
            "binary_version": "1.6.20-2ubuntu0.1~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "libpng1.6",
        "purl": "pkg:deb/ubuntu/libpng1.6@1.6.20-2ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.6.20-2ubuntu0.1~esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.6.20-2",
        "1.6.20-2ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libpng-tools",
            "binary_version": "1.6.34-1ubuntu0.18.04.2+esm1"
          },
          {
            "binary_name": "libpng16-16",
            "binary_version": "1.6.34-1ubuntu0.18.04.2+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "libpng1.6",
        "purl": "pkg:deb/ubuntu/libpng1.6@1.6.34-1ubuntu0.18.04.2+esm1?arch=source\u0026distro=esm-infra/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.6.34-1ubuntu0.18.04.2+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.6.34-1",
        "1.6.34-1ubuntu0.18.04.1",
        "1.6.34-1ubuntu0.18.04.2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libpng-tools",
            "binary_version": "1.6.37-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "libpng16-16",
            "binary_version": "1.6.37-2ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "libpng1.6",
        "purl": "pkg:deb/ubuntu/libpng1.6@1.6.37-2ubuntu0.1~esm1?arch=source\u0026distro=esm-infra/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.6.37-2ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.6.37-1",
        "1.6.37-2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libpng-tools",
            "binary_version": "1.6.37-3ubuntu0.1"
          },
          {
            "binary_name": "libpng16-16",
            "binary_version": "1.6.37-3ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "libpng1.6",
        "purl": "pkg:deb/ubuntu/libpng1.6@1.6.37-3ubuntu0.1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.6.37-3ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.6.37-3build4",
        "1.6.37-3build5"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libpng-tools",
            "binary_version": "1.6.43-5ubuntu0.1"
          },
          {
            "binary_name": "libpng16-16t64",
            "binary_version": "1.6.43-5ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "libpng1.6",
        "purl": "pkg:deb/ubuntu/libpng1.6@1.6.43-5ubuntu0.1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.6.43-5ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.6.40-1",
        "1.6.40-2",
        "1.6.40-3",
        "1.6.42-1",
        "1.6.43-1",
        "1.6.43-3",
        "1.6.43-5build1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libpng-tools",
            "binary_version": "1.6.50-1ubuntu0.1"
          },
          {
            "binary_name": "libpng16-16t64",
            "binary_version": "1.6.50-1ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "libpng1.6",
        "purl": "pkg:deb/ubuntu/libpng1.6@1.6.50-1ubuntu0.1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.6.50-1ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.6.47-1.1",
        "1.6.48-1",
        "1.6.49-1~exp1",
        "1.6.50-1~exp1",
        "1.6.50-1"
      ]
    }
  ],
  "aliases": [],
  "details": "LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From version 1.6.0 to before 1.6.51, an out-of-bounds read vulnerability exists in png_image_read_composite when processing palette images with PNG_FLAG_OPTIMIZE_ALPHA enabled. The palette compositing code in png_init_read_transformations incorrectly applies background compositing during premultiplication, violating the invariant component \u2264 alpha \u00d7 257 required by the simplified PNG API. This issue has been patched in version 1.6.51.",
  "id": "UBUNTU-CVE-2025-64720",
  "modified": "2026-04-22T07:56:56Z",
  "published": "2025-11-25T00:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-64720"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-64720"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/pnggroup/libpng/security/advisories/GHSA-hfc7-ph9c-wcww"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/pnggroup/libpng/issues/686"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/pnggroup/libpng/commit/08da33b4c88cfcd36e5a706558a8d7e0e4773643"
    },
    {
      "type": "REPORT",
      "url": "https://www.openwall.com/lists/oss-security/2025/11/22/1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-7924-1"
    }
  ],
  "related": [
    "USN-7924-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2025-64720"
  ]
}

CVE-2025-64720 (GCVE-0-2025-64720)

Vulnerability from cvelistv5 – Published: 2025-11-24 23:45 – Updated: 2025-11-25 19:28

Title

LIBPNG is vulnerable to a buffer overflow in `png_image_read_composite` via incorrect palette premultiplication

Summary

Severity

7.1 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-11-25 19:28 UTC

CWE

CWE-125 - Out-of-bounds Read

Assigner

GitHub_M mitre root

References

4 references

URL	Tags
https://github.com/pnggroup/libpng/security/advis…	x_refsource_CONFIRM
https://github.com/pnggroup/libpng/issues/686	x_refsource_MISC
https://github.com/pnggroup/libpng/pull/751	x_refsource_MISC
https://github.com/pnggroup/libpng/commit/08da33b…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
pnggroup	libpng	Affected: >= 1.6.0, < 1.6.51

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-64720",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-11-25T19:28:16.806638Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-11-25T19:28:20.336Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/pnggroup/libpng/security/advisories/GHSA-hfc7-ph9c-wcww"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "libpng",
          "vendor": "pnggroup",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.6.0, \u003c 1.6.51"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From version 1.6.0 to before 1.6.51, an out-of-bounds read vulnerability exists in png_image_read_composite when processing palette images with PNG_FLAG_OPTIMIZE_ALPHA enabled. The palette compositing code in png_init_read_transformations incorrectly applies background compositing during premultiplication, violating the invariant component \u2264 alpha \u00d7 257 required by the simplified PNG API. This issue has been patched in version 1.6.51."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
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          "descriptions": [
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              "cweId": "CWE-125",
              "description": "CWE-125: Out-of-bounds Read",
              "lang": "en",
              "type": "CWE"
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          ]
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      ],
      "providerMetadata": {
        "dateUpdated": "2025-11-24T23:45:38.315Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
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          "url": "https://github.com/pnggroup/libpng/security/advisories/GHSA-hfc7-ph9c-wcww"
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          "name": "https://github.com/pnggroup/libpng/issues/686",
          "tags": [
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        "advisory": "GHSA-hfc7-ph9c-wcww",
        "discovery": "UNKNOWN"
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      "title": "LIBPNG is vulnerable to a buffer overflow in `png_image_read_composite` via incorrect palette premultiplication"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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    "datePublished": "2025-11-24T23:45:38.315Z",
    "dateReserved": "2025-11-10T14:07:42.922Z",
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}

USN-7924-1 (UBUNTU-CVE-2025-64505)

Vulnerability from osv_ubuntu – Published: 2025-12-11 05:26 – Updated: 2026-06-25 10:47 – Source website

Summary

libpng1.6 vulnerabilities

Details

It was discovered that libpng incorrectly handled memory when processing certain PNG files, which could result in an out-of-bounds memory access. If a user or automated system were tricked into opening a specially crafted PNG file, an attacker could use this issue to cause libpng to crash, resulting in a denial of service. (CVE-2025-64505)

It was discovered that libpng incorrectly handled memory when processing 8-bit images through the simplified write API with 'convert_to_8bit' enabled, which could result in an out-of-bounds memory access. If a user or automated system were tricked into opening a specially crafted 8-bit PNG file, an attacker could use this issue to cause libpng to crash, resulting in a denial of service. (CVE-2025-64506)

It was discovered that libpng incorrectly handled memory when processing palette images with 'PNG_FLAG_OPTIMIZE_ALPHA' enabled, which could result in an out-of-bounds memory access. If a user or automated system were tricked into opening a specially crafted PNG file, an attacker could use this issue to cause libpng to crash, resulting in a denial of service. (CVE-2025-64720)

It was discovered that libpng incorrectly handled memory when processing 6-bit interlaced PNGs with 8-bit output format, which could result in an out-of-bounds memory access. If a user or automated system were tricked into opening a specially crafted PNG file, an attacker could use this issue to cause libpng to crash, resulting in a denial of service. (CVE-2025-65018)

References

URL

Type

	https://ubuntu.com/security/notices/USN-7924-1	ADVISORY
	https://ubuntu.com/security/CVE-2025-64505	REPORT
	https://ubuntu.com/security/CVE-2025-64506	REPORT
	https://ubuntu.com/security/CVE-2025-64720	REPORT
	https://ubuntu.com/security/CVE-2025-65018	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2025-64505",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-64506",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-64720",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-65018",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libpng16-16",
            "binary_version": "1.6.20-2ubuntu0.1~esm2"
          },
          {
            "binary_name": "libpng16-devtools",
            "binary_version": "1.6.20-2ubuntu0.1~esm2"
          },
          {
            "binary_name": "libpng16-tools",
            "binary_version": "1.6.20-2ubuntu0.1~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "libpng1.6",
        "purl": "pkg:deb/ubuntu/libpng1.6@1.6.20-2ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.6.20-2ubuntu0.1~esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.6.20-2",
        "1.6.20-2ubuntu0.1~esm1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2025-64505",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-64506",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-64720",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-65018",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libpng-tools",
            "binary_version": "1.6.34-1ubuntu0.18.04.2+esm1"
          },
          {
            "binary_name": "libpng16-16",
            "binary_version": "1.6.34-1ubuntu0.18.04.2+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "libpng1.6",
        "purl": "pkg:deb/ubuntu/libpng1.6@1.6.34-1ubuntu0.18.04.2+esm1?arch=source\u0026distro=esm-infra/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.6.34-1ubuntu0.18.04.2+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.6.34-1",
        "1.6.34-1ubuntu0.18.04.1",
        "1.6.34-1ubuntu0.18.04.2"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2025-64505",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-64506",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-64720",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-65018",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libpng-tools",
            "binary_version": "1.6.37-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "libpng16-16",
            "binary_version": "1.6.37-2ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "libpng1.6",
        "purl": "pkg:deb/ubuntu/libpng1.6@1.6.37-2ubuntu0.1~esm1?arch=source\u0026distro=esm-infra/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.6.37-2ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.6.37-1",
        "1.6.37-2"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2025-64505",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-64506",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-64720",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-65018",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:22.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libpng-tools",
            "binary_version": "1.6.37-3ubuntu0.1"
          },
          {
            "binary_name": "libpng16-16",
            "binary_version": "1.6.37-3ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "libpng1.6",
        "purl": "pkg:deb/ubuntu/libpng1.6@1.6.37-3ubuntu0.1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.6.37-3ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.6.37-3build4",
        "1.6.37-3build5"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2025-64505",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-64506",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-64720",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-65018",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:24.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libpng-tools",
            "binary_version": "1.6.43-5ubuntu0.1"
          },
          {
            "binary_name": "libpng16-16t64",
            "binary_version": "1.6.43-5ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "libpng1.6",
        "purl": "pkg:deb/ubuntu/libpng1.6@1.6.43-5ubuntu0.1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.6.43-5ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.6.40-1",
        "1.6.40-2",
        "1.6.40-3",
        "1.6.42-1",
        "1.6.43-1",
        "1.6.43-3",
        "1.6.43-5build1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2025-64505",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-64506",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-64720",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-65018",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:25.10"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libpng-tools",
            "binary_version": "1.6.50-1ubuntu0.1"
          },
          {
            "binary_name": "libpng16-16t64",
            "binary_version": "1.6.50-1ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "libpng1.6",
        "purl": "pkg:deb/ubuntu/libpng1.6@1.6.50-1ubuntu0.1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.6.50-1ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.6.47-1.1",
        "1.6.48-1",
        "1.6.49-1~exp1",
        "1.6.50-1~exp1",
        "1.6.50-1"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that libpng incorrectly handled memory when processing\ncertain PNG files, which could result in an out-of-bounds memory access.\nIf a user or automated system were tricked into opening a specially\ncrafted PNG file, an attacker could use this issue to cause libpng to\ncrash, resulting in a denial of service. (CVE-2025-64505)\n\nIt was discovered that libpng incorrectly handled memory when processing\n8-bit images through the simplified write API with \u0027convert_to_8bit\u0027\nenabled, which could result in an out-of-bounds memory access. If a user\nor automated system were tricked into opening a specially crafted 8-bit\nPNG file, an attacker could use this issue to cause libpng to crash,\nresulting in a denial of service. (CVE-2025-64506)\n\nIt was discovered that libpng incorrectly handled memory when processing\npalette images with \u0027PNG_FLAG_OPTIMIZE_ALPHA\u0027 enabled, which could result\nin an out-of-bounds memory access. If a user or automated system were\ntricked into opening a specially crafted PNG file, an attacker could use\nthis issue to cause libpng to crash, resulting in a denial of service.\n(CVE-2025-64720)\n\nIt was discovered that libpng incorrectly handled memory when processing\n6-bit interlaced PNGs with 8-bit output format, which could result in an\nout-of-bounds memory access. If a user or automated system were tricked\ninto opening a specially crafted PNG file, an attacker could use this\nissue to cause libpng to crash, resulting in a denial of service.\n(CVE-2025-65018)",
  "id": "USN-7924-1",
  "modified": "2026-06-25T10:47:02Z",
  "published": "2025-12-11T05:26:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-7924-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-64505"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-64506"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-64720"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-65018"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "libpng1.6 vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2025-64505",
    "UBUNTU-CVE-2025-64506",
    "UBUNTU-CVE-2025-64720",
    "UBUNTU-CVE-2025-65018"
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

UBUNTU-CVE-2025-64720 (CVE-2025-64720)

CVE-2025-64720 (GCVE-0-2025-64720)

USN-7924-1 (UBUNTU-CVE-2025-64505)

Tags

Sightings

Nomenclature

Related by attack behaviour