Vulnerability-Lookup

OESA-2026-3312 (CVE-2026-38752)

Vulnerability from osv_openeuler – Published: 2026-08-07 02:47 – Updated: 2026-08-07 02:47 – Source website

Summary

busybox security update

Details

The Swiss Army Knife of Embedded Linux

Security Fix(es):

A stack overflow in the evaluate() function (editors/awk.c) of BusyBox commit 371fe9 allows attackers to cause a Denial of Service (DoS) via supplying a crafted AWK script.(CVE-2026-38752)

A use-after-free in the awk_sub() function (editors/awk.c) of Busybox v1.38.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted AWK script.(CVE-2026-38753)

A heap overflow in the ifsbreakup() function (shell/ash.c) of Busybox v1.38.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted input.(CVE-2026-38754)

A heap overflow in the evalcommand() function (shell/ash.c) of Busybox v1.38.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted input.(CVE-2026-38755)

Severity

5.1 (Medium)


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

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-38752	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-38753	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-38754	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-38755	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "busybox-1.36.1-21.oe2403sp1.aarch64.rpm",
          "busybox-debuginfo-1.36.1-21.oe2403sp1.aarch64.rpm",
          "busybox-debugsource-1.36.1-21.oe2403sp1.aarch64.rpm",
          "busybox-petitboot-1.36.1-21.oe2403sp1.aarch64.rpm"
        ],
        "noarch": [
          "busybox-help-1.36.1-21.oe2403sp1.noarch.rpm"
        ],
        "src": [
          "busybox-1.36.1-21.oe2403sp1.src.rpm"
        ],
        "x86_64": [
          "busybox-1.36.1-21.oe2403sp1.x86_64.rpm",
          "busybox-debuginfo-1.36.1-21.oe2403sp1.x86_64.rpm",
          "busybox-debugsource-1.36.1-21.oe2403sp1.x86_64.rpm",
          "busybox-petitboot-1.36.1-21.oe2403sp1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP1",
        "name": "busybox",
        "purl": "pkg:rpm/openEuler/busybox\u0026distro=openEuler-24.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.36.1-21.oe2403sp1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "busybox-1.36.1-21.oe2403sp3.aarch64.rpm",
          "busybox-debuginfo-1.36.1-21.oe2403sp3.aarch64.rpm",
          "busybox-debugsource-1.36.1-21.oe2403sp3.aarch64.rpm",
          "busybox-petitboot-1.36.1-21.oe2403sp3.aarch64.rpm"
        ],
        "noarch": [
          "busybox-help-1.36.1-21.oe2403sp3.noarch.rpm"
        ],
        "src": [
          "busybox-1.36.1-21.oe2403sp3.src.rpm"
        ],
        "x86_64": [
          "busybox-1.36.1-21.oe2403sp3.x86_64.rpm",
          "busybox-debuginfo-1.36.1-21.oe2403sp3.x86_64.rpm",
          "busybox-debugsource-1.36.1-21.oe2403sp3.x86_64.rpm",
          "busybox-petitboot-1.36.1-21.oe2403sp3.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP3",
        "name": "busybox",
        "purl": "pkg:rpm/openEuler/busybox\u0026distro=openEuler-24.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.36.1-21.oe2403sp3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "busybox-1.36.1-21.oe2403sp4.aarch64.rpm",
          "busybox-debuginfo-1.36.1-21.oe2403sp4.aarch64.rpm",
          "busybox-debugsource-1.36.1-21.oe2403sp4.aarch64.rpm",
          "busybox-petitboot-1.36.1-21.oe2403sp4.aarch64.rpm"
        ],
        "noarch": [
          "busybox-help-1.36.1-21.oe2403sp4.noarch.rpm"
        ],
        "src": [
          "busybox-1.36.1-21.oe2403sp4.src.rpm"
        ],
        "x86_64": [
          "busybox-1.36.1-21.oe2403sp4.x86_64.rpm",
          "busybox-debuginfo-1.36.1-21.oe2403sp4.x86_64.rpm",
          "busybox-debugsource-1.36.1-21.oe2403sp4.x86_64.rpm",
          "busybox-petitboot-1.36.1-21.oe2403sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP4",
        "name": "busybox",
        "purl": "pkg:rpm/openEuler/busybox\u0026distro=openEuler-24.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.36.1-21.oe2403sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "busybox-1.31.1-35.oe2003sp4.aarch64.rpm",
          "busybox-debuginfo-1.31.1-35.oe2003sp4.aarch64.rpm",
          "busybox-debugsource-1.31.1-35.oe2003sp4.aarch64.rpm",
          "busybox-help-1.31.1-35.oe2003sp4.aarch64.rpm",
          "busybox-petitboot-1.31.1-35.oe2003sp4.aarch64.rpm"
        ],
        "src": [
          "busybox-1.31.1-35.oe2003sp4.src.rpm"
        ],
        "x86_64": [
          "busybox-1.31.1-35.oe2003sp4.x86_64.rpm",
          "busybox-debuginfo-1.31.1-35.oe2003sp4.x86_64.rpm",
          "busybox-debugsource-1.31.1-35.oe2003sp4.x86_64.rpm",
          "busybox-help-1.31.1-35.oe2003sp4.x86_64.rpm",
          "busybox-petitboot-1.31.1-35.oe2003sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP4",
        "name": "busybox",
        "purl": "pkg:rpm/openEuler/busybox\u0026distro=openEuler-20.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.31.1-35.oe2003sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "busybox-1.34.1-34.oe2203sp4.aarch64.rpm",
          "busybox-debuginfo-1.34.1-34.oe2203sp4.aarch64.rpm",
          "busybox-debugsource-1.34.1-34.oe2203sp4.aarch64.rpm",
          "busybox-help-1.34.1-34.oe2203sp4.aarch64.rpm",
          "busybox-petitboot-1.34.1-34.oe2203sp4.aarch64.rpm"
        ],
        "src": [
          "busybox-1.34.1-34.oe2203sp4.src.rpm"
        ],
        "x86_64": [
          "busybox-1.34.1-34.oe2203sp4.x86_64.rpm",
          "busybox-debuginfo-1.34.1-34.oe2203sp4.x86_64.rpm",
          "busybox-debugsource-1.34.1-34.oe2203sp4.x86_64.rpm",
          "busybox-help-1.34.1-34.oe2203sp4.x86_64.rpm",
          "busybox-petitboot-1.34.1-34.oe2203sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP4",
        "name": "busybox",
        "purl": "pkg:rpm/openEuler/busybox\u0026distro=openEuler-22.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.34.1-34.oe2203sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": "The Swiss Army Knife of Embedded Linux\r\n\r\nSecurity Fix(es):\n\nA stack overflow in the evaluate() function (editors/awk.c) of BusyBox commit 371fe9 allows attackers to cause a Denial of Service (DoS) via supplying a crafted AWK script.(CVE-2026-38752)\n\nA use-after-free in the awk_sub() function (editors/awk.c) of Busybox v1.38.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted AWK script.(CVE-2026-38753)\n\nA heap overflow in the ifsbreakup() function (shell/ash.c) of Busybox v1.38.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted input.(CVE-2026-38754)\n\nA heap overflow in the evalcommand() function (shell/ash.c) of Busybox v1.38.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted input.(CVE-2026-38755)",
  "id": "OESA-2026-3312",
  "modified": "2026-08-07T02:47:03Z",
  "published": "2026-08-07T02:47:03Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3312"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-38752"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-38753"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-38754"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-38755"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "busybox security update",
  "upstream": [
    "CVE-2026-38752",
    "CVE-2026-38753",
    "CVE-2026-38754",
    "CVE-2026-38755"
  ]
}

CVE-2026-38752 (GCVE-0-2026-38752)

Vulnerability from cvelistv5 – Published: 2026-07-15 00:00 – Updated: 2026-07-20 15:12

Summary

A stack overflow in the evaluate() function (editors/awk.c) of BusyBox commit 371fe9 allows attackers to cause a Denial of Service (DoS) via supplying a crafted AWK script.

Severity

2.9 (Low)


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

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-16 15:21 UTC

CWE

CWE-674 - Uncontrolled Recursion
CWE-121 - Stack-based Buffer Overflow

Assigner

mitre mitre root

References

2 references

URL	Tags
https://busybox.net/
https://lists.busybox.net/pipermail/busybox/2026-…

Impacted products

1 product

Vendor	Product	Version
BusyBox	BusyBox	Affected: 1.00 , ≤ 1.38.0 (custom) cpe:2.3:a:busybox:busybox::::::::

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-38752",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-16T15:21:33.843028Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-121",
                "description": "CWE-121 Stack-based Buffer Overflow",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-16T15:22:03.844Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "BusyBox",
          "vendor": "BusyBox",
          "versions": [
            {
              "lessThanOrEqual": "1.38.0",
              "status": "affected",
              "version": "1.00",
              "versionType": "custom"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:busybox:busybox:*:*:*:*:*:*:*:*",
                  "versionEndIncluding": "1.38.0",
                  "versionStartIncluding": "1.00",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A stack overflow in the evaluate() function (editors/awk.c) of BusyBox commit 371fe9 allows attackers to cause a Denial of Service (DoS) via supplying a crafted AWK script."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "LOW",
            "baseScore": 2.9,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-674",
              "description": "CWE-674 Uncontrolled Recursion",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-20T15:12:38.662Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://busybox.net/"
        },
        {
          "url": "https://lists.busybox.net/pipermail/busybox/2026-June/092351.html"
        }
      ],
      "x_generator": {
        "engine": "enrichogram 0.0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2026-38752",
    "datePublished": "2026-07-15T00:00:00.000Z",
    "dateReserved": "2026-04-06T00:00:00.000Z",
    "dateUpdated": "2026-07-20T15:12:38.662Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-38753 (GCVE-0-2026-38753)

Vulnerability from cvelistv5 – Published: 2026-07-15 00:00 – Updated: 2026-07-20 15:33

Summary

A use-after-free in the awk_sub() function (editors/awk.c) of Busybox v1.38.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted AWK script.

Severity

4.9 (Medium)


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

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-16 15:22 UTC

CWE

CWE-416 - Use After Free

Assigner

mitre mitre root

References

2 references

URL	Tags
https://busybox.net
https://lists.busybox.net/pipermail/busybox/2026-…

Impacted products

1 product

Vendor	Product	Version
BusyBox	BusyBox	Affected: 1.00 , ≤ 1.38.0 (custom) cpe:2.3:a:busybox:busybox::::::::

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-38753",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-16T15:22:18.819592Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-416",
                "description": "CWE-416 Use After Free",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-16T15:23:10.717Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "BusyBox",
          "vendor": "BusyBox",
          "versions": [
            {
              "lessThanOrEqual": "1.38.0",
              "status": "affected",
              "version": "1.00",
              "versionType": "custom"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:busybox:busybox:*:*:*:*:*:*:*:*",
                  "versionEndIncluding": "1.38.0",
                  "versionStartIncluding": "1.00",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A use-after-free in the awk_sub() function (editors/awk.c) of Busybox v1.38.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted AWK script."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "LOW",
            "baseScore": 4.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-416",
              "description": "CWE-416 Use After Free",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-20T15:33:13.060Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://busybox.net"
        },
        {
          "url": "https://lists.busybox.net/pipermail/busybox/2026-June/092352.html"
        }
      ],
      "x_generator": {
        "engine": "enrichogram 0.0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2026-38753",
    "datePublished": "2026-07-15T00:00:00.000Z",
    "dateReserved": "2026-04-06T00:00:00.000Z",
    "dateUpdated": "2026-07-20T15:33:13.060Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-38754 (GCVE-0-2026-38754)

Vulnerability from cvelistv5 – Published: 2026-07-15 00:00 – Updated: 2026-07-22 14:42

Summary

A heap overflow in the ifsbreakup() function (shell/ash.c) of Busybox v1.38.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted input.

Severity

5.1 (Medium)


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

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-16 15:20 UTC

CWE

CWE-125 - Out-of-bounds Read
CWE-122 - Heap-based Buffer Overflow

Assigner

mitre mitre root

References

3 references

URL	Tags
https://busybox.net
https://lists.busybox.net/pipermail/busybox/2026-…
https://lists.busybox.net/pipermail/busybox/2026-…

Impacted products

1 product

Vendor	Product	Version
BusyBox	BusyBox	Affected: 1.00 , ≤ 1.38.0 (custom) cpe:2.3:a:busybox:busybox::::::::

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-38754",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-16T15:20:43.685394Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-122",
                "description": "CWE-122 Heap-based Buffer Overflow",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-16T15:21:03.401Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "BusyBox",
          "vendor": "BusyBox",
          "versions": [
            {
              "lessThanOrEqual": "1.38.0",
              "status": "affected",
              "version": "1.00",
              "versionType": "custom"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:busybox:busybox:*:*:*:*:*:*:*:*",
                  "versionEndIncluding": "1.38.0",
                  "versionStartIncluding": "1.00",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A heap overflow in the ifsbreakup() function (shell/ash.c) of Busybox v1.38.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted input."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "LOW",
            "baseScore": 5.1,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-125",
              "description": "CWE-125 Out-of-bounds Read",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-22T14:42:57.143Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://busybox.net"
        },
        {
          "url": "https://lists.busybox.net/pipermail/busybox/2026-June/092353.html"
        },
        {
          "url": "https://lists.busybox.net/pipermail/busybox/2026-June/092360.html"
        }
      ],
      "x_generator": {
        "engine": "enrichogram 0.0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2026-38754",
    "datePublished": "2026-07-15T00:00:00.000Z",
    "dateReserved": "2026-04-06T00:00:00.000Z",
    "dateUpdated": "2026-07-22T14:42:57.143Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-38755 (GCVE-0-2026-38755)

Vulnerability from cvelistv5 – Published: 2026-07-15 00:00 – Updated: 2026-07-20 15:30

Summary

A heap overflow in the evalcommand() function (shell/ash.c) of Busybox v1.38.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted input.

Severity

2.9 (Low)


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

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-16 15:19 UTC

CWE

CWE-674 - Uncontrolled Recursion
CWE-122 - Heap-based Buffer Overflow

Assigner

mitre mitre root

References

2 references

URL	Tags
https://busybox.net
https://lists.busybox.net/pipermail/busybox/2026-…

Impacted products

1 product

Vendor	Product	Version
BusyBox	BusyBox	Affected: 0.52 , ≤ 1.38.0 (custom) cpe:2.3:a:busybox:busybox::::::::

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-38755",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-16T15:19:58.220050Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-122",
                "description": "CWE-122 Heap-based Buffer Overflow",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-16T15:20:24.772Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "BusyBox",
          "vendor": "BusyBox",
          "versions": [
            {
              "lessThanOrEqual": "1.38.0",
              "status": "affected",
              "version": "0.52",
              "versionType": "custom"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:busybox:busybox:*:*:*:*:*:*:*:*",
                  "versionEndIncluding": "1.38.0",
                  "versionStartIncluding": "0.52",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A heap overflow in the evalcommand() function (shell/ash.c) of Busybox v1.38.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted input."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "LOW",
            "baseScore": 2.9,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-674",
              "description": "CWE-674 Uncontrolled Recursion",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-20T15:30:59.964Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://busybox.net"
        },
        {
          "url": "https://lists.busybox.net/pipermail/busybox/2026-June/092354.html"
        }
      ],
      "x_generator": {
        "engine": "enrichogram 0.0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2026-38755",
    "datePublished": "2026-07-15T00:00:00.000Z",
    "dateReserved": "2026-04-06T00:00:00.000Z",
    "dateUpdated": "2026-07-20T15:30:59.964Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Detection rules are retrieved from Rulezet.

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

OESA-2026-3312 (CVE-2026-38752)

CVE-2026-38752 (GCVE-0-2026-38752)

CVE-2026-38753 (GCVE-0-2026-38753)

CVE-2026-38754 (GCVE-0-2026-38754)

CVE-2026-38755 (GCVE-0-2026-38755)

Tags

Sightings

Nomenclature

Related by attack behaviour