Vulnerability-Lookup

UBUNTU-CVE-2026-75806 (CVE-2026-75806)

Vulnerability from osv_ubuntu – Published: 2026-09-29 00:00 – Updated: 2026-09-30 21:33 – Source website

Details

Issue summary: An established DTLS 1.2 association using an AEAD cipher suite can be terminated by a single unauthenticated datagram whose encrypted fragment is shorter than the mandatory explicit IV and authentication tag overhead. Impact summary: An attacker who can send a datagram that is routed to an existing DTLS 1.2 association can tear that association down without knowing any key material. This is a Denial of Service limited to the targeted association. There is no memory safety or confidentiality impact. CWE: CWE-1284: Improper Validation of Specified Quantity in Input Description: In TLS 1.2 and DTLS 1.2 every record protected by an AEAD cipher suite carries an explicit IV followed by the ciphertext and an authentication tag. When decrypting such a record the record layer passed the record length to the cipher implementation before checking that the record was long enough to contain the explicit IV and the tag. For a record shorter than that overhead the cipher implementation rejected the impossible length, and the record layer treated this as an internal failure and raised a fatal internal_error alert instead of treating the record as one that failed authentication. In TLS 1.2 the same record causes a fatal internal_error alert instead of the expected bad_record_mac alert. Since any undecryptable record already terminates a TLS connection, this is a protocol conformance issue rather than a security issue in TLS. The fix validates the record length against the explicit IV and tag length before any AEAD processing, so that TLS reports bad_record_mac and DTLS silently discards the record. FIPS impact: no The affected code is outside the FIPS module boundary.

Severity

5.3 (Medium)


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

N/A (UNKNOWN)

low

References

URL

Type

	https://ubuntu.com/security/CVE-2026-75806	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-75806	REPORT
	https://openssl-library.org/news/secadv/20260929.txt	REPORT
	https://ubuntu.com/security/notices/USN-8847-1	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libssl1.0.0",
            "binary_version": "1.0.1f-1ubuntu2.27+esm17"
          },
          {
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            "binary_version": "1.0.1f-1ubuntu2.27+esm17"
          }
        ],
        "priority_reason": "OpenSSL developers have rated this issue as being low severity"
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "openssl",
        "purl": "pkg:deb/ubuntu/openssl@1.0.1f-1ubuntu2.27+esm17?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
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            {
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
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        "1.0.1e-4ubuntu1",
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        "1.0.1e-4ubuntu3",
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        "1.0.1f-1ubuntu1",
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        "1.0.1f-1ubuntu2.19",
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CVE-2026-75806 (GCVE-0-2026-75806)

Vulnerability from cvelistv5 – Published: 2026-09-29 15:32 – Updated: 2026-09-29 16:53

Title

Unauthenticated and Undersized DTLS 1.2 AEAD Record Causes DoS

Summary

Severity

5.3 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-29 16:52 UTC

CWE

CWE-1284 - Improper Validation of Specified Quantity in Input

Assigner

openssl mitre root Scorecard

References

5 references

URL	Tags
https://openssl-library.org/news/secadv/20260929.txt	vendor-advisory
https://github.com/openssl/openssl/commit/04728a2…	patch
https://github.com/openssl/openssl/commit/050b275…	patch
https://github.com/openssl/openssl/commit/3a4589d…	patch
https://github.com/openssl/openssl/commit/5af82fe…	patch

Impacted products

1 product

Vendor	Product	Version
OpenSSL	OpenSSL	Affected: 4.0.0 , < 4.0.3 (semver) Affected: 3.6.0 , < 3.6.5 (semver) Affected: 3.5.0 , < 3.5.9 (semver) Affected: 3.4.0 , < 3.4.8 (semver) Affected: 3.0.0 , < 3.0.23 (semver) Affected: 1.1.1 , < 1.1.1zj (custom)

Date Public

2026-09-29 14:21

Credits

Mounir Idrassi Mounir Idrassi

Show details on NVD website

JSON

To clipboard

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    "assignerOrgId": "3a12439a-ef3a-4c79-92e6-6081a721f1e5",
    "assignerShortName": "openssl",
    "cveId": "CVE-2026-75806",
    "datePublished": "2026-09-29T15:32:21.457Z",
    "dateReserved": "2026-08-18T09:34:32.659Z",
    "dateUpdated": "2026-09-29T16:53:23.785Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

USN-8847-1 (UBUNTU-CVE-2026-35189)

Vulnerability from osv_ubuntu – Published: 2026-09-29 18:19 – Updated: 2026-09-30 20:43 – Source website

Summary

openssl vulnerabilities

Details

It was discovered that OpenSSL incorrectly handled certain certificate revocation list distribution point names. An attacker could possibly use this issue to cause OpenSSL to consume excessive memory, resulting in a denial of service. (CVE-2026-35189)

It was discovered that OpenSSL incorrectly handled QUIC unvalidated amplification credit accounting. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-35191)

It was discovered that OpenSSL incorrectly implemented scalar multiplication for non-NIST elliptic curves. An attacker could possibly use this issue to perform a timing side-channel attack and obtain sensitive information. (CVE-2026-54872)

It was discovered that OpenSSL incorrectly implemented SM2 scalar multiplication on ARM64 and RISC-V architectures. An attacker could possibly use this issue to perform a timing side-channel attack and obtain sensitive information. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-54875)

It was discovered that OpenSSL incorrectly handled SSL context switching during a TLS handshake. An attacker could possibly use this issue to cause an out-of-bounds read, resulting in a denial of service or obtaining sensitive information. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-72897)

It was discovered that OpenSSL incorrectly enforced QUIC connection- level flow control for streams. An attacker could possibly use this issue to cause OpenSSL to consume excessive memory, resulting in a denial of service. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-75804)

It was discovered that OpenSSL incorrectly handled a NULL pointer in CMP client revocation response processing. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-75805)

It was discovered that OpenSSL incorrectly handled undersized DTLS 1.2 AEAD records before authentication. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-75806)

It was discovered that OpenSSL incorrectly implemented SM2 signature generation. An attacker could possibly use this issue to perform a timing side-channel attack and obtain sensitive information. (CVE-2026-77696)

It was discovered that OpenSSL incorrectly handled DTLS retransmission of handshake messages. An attacker could possibly use this issue to cause incorrect handshake behavior or a denial of service. (CVE-2026-84782)

It was discovered that OpenSSL incorrectly handled QUIC RETIRE_CONNECTION_ID frames. An attacker could possibly use this issue to cause OpenSSL to consume excessive memory, resulting in a denial of service. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-84784)

References

URL

Type

	https://ubuntu.com/security/notices/USN-8847-1	ADVISORY
	https://ubuntu.com/security/CVE-2026-35189	REPORT
	https://ubuntu.com/security/CVE-2026-35191	REPORT
	https://ubuntu.com/security/CVE-2026-54872	REPORT
	https://ubuntu.com/security/CVE-2026-54875	REPORT
	https://ubuntu.com/security/CVE-2026-72897	REPORT
	https://ubuntu.com/security/CVE-2026-75804	REPORT
	https://ubuntu.com/security/CVE-2026-75805	REPORT
	https://ubuntu.com/security/CVE-2026-75806	REPORT
	https://ubuntu.com/security/CVE-2026-77696	REPORT
	https://ubuntu.com/security/CVE-2026-84782	REPORT
	https://ubuntu.com/security/CVE-2026-84784	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-35189",
              "severity": [
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-54872",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-75805",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-75806",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-77696",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-84782",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:22.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libssl3",
            "binary_version": "3.0.2-0ubuntu1.30"
          },
          {
            "binary_name": "openssl",
            "binary_version": "3.0.2-0ubuntu1.30"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "openssl",
        "purl": "pkg:deb/ubuntu/openssl@3.0.2-0ubuntu1.30?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.0.2-0ubuntu1.30"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.1l-1ubuntu1",
        "3.0.0-1ubuntu1",
        "3.0.1-0ubuntu1",
        "3.0.2-0ubuntu1",
        "3.0.2-0ubuntu1.1",
        "3.0.2-0ubuntu1.2",
        "3.0.2-0ubuntu1.4",
        "3.0.2-0ubuntu1.5",
        "3.0.2-0ubuntu1.6",
        "3.0.2-0ubuntu1.7",
        "3.0.2-0ubuntu1.8",
        "3.0.2-0ubuntu1.9",
        "3.0.2-0ubuntu1.10",
        "3.0.2-0ubuntu1.12",
        "3.0.2-0ubuntu1.13",
        "3.0.2-0ubuntu1.14",
        "3.0.2-0ubuntu1.15",
        "3.0.2-0ubuntu1.16",
        "3.0.2-0ubuntu1.17",
        "3.0.2-0ubuntu1.18",
        "3.0.2-0ubuntu1.19",
        "3.0.2-0ubuntu1.20",
        "3.0.2-0ubuntu1.21",
        "3.0.2-0ubuntu1.23",
        "3.0.2-0ubuntu1.25",
        "3.0.2-0ubuntu1.26",
        "3.0.2-0ubuntu1.29"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-35189",
              "severity": [
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-54872",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-75805",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-75806",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-77696",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-84782",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:24.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libssl3t64",
            "binary_version": "3.0.13-0ubuntu3.16"
          },
          {
            "binary_name": "openssl",
            "binary_version": "3.0.13-0ubuntu3.16"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "openssl",
        "purl": "pkg:deb/ubuntu/openssl@3.0.13-0ubuntu3.16?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.0.13-0ubuntu3.16"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.0.10-1ubuntu2",
        "3.0.10-1ubuntu2.1",
        "3.0.10-1ubuntu3",
        "3.0.10-1ubuntu4",
        "3.0.13-0ubuntu2",
        "3.0.13-0ubuntu3",
        "3.0.13-0ubuntu3.1",
        "3.0.13-0ubuntu3.2",
        "3.0.13-0ubuntu3.3",
        "3.0.13-0ubuntu3.4",
        "3.0.13-0ubuntu3.5",
        "3.0.13-0ubuntu3.6",
        "3.0.13-0ubuntu3.7",
        "3.0.13-0ubuntu3.9",
        "3.0.13-0ubuntu3.11",
        "3.0.13-0ubuntu3.12",
        "3.0.13-0ubuntu3.15"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-35189",
              "severity": [
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-35191",
              "severity": [
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-54872",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-54875",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-72897",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-75804",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-75805",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-75806",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-77696",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-84782",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-84784",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:26.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libssl3t64",
            "binary_version": "3.5.5-1ubuntu3.6"
          },
          {
            "binary_name": "openssl",
            "binary_version": "3.5.5-1ubuntu3.6"
          },
          {
            "binary_name": "openssl-provider-legacy",
            "binary_version": "3.5.5-1ubuntu3.6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "openssl",
        "purl": "pkg:deb/ubuntu/openssl@3.5.5-1ubuntu3.6?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.5.5-1ubuntu3.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.5.3-1ubuntu2",
        "3.5.5-1ubuntu1",
        "3.5.5-1ubuntu3",
        "3.5.5-1ubuntu3.2",
        "3.5.5-1ubuntu3.3",
        "3.5.5-1ubuntu3.4",
        "3.5.5-1ubuntu3.5"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that OpenSSL incorrectly handled certain certificate\nrevocation list distribution point names. An attacker could possibly use\nthis issue to cause OpenSSL to consume excessive memory, resulting in a\ndenial of service. (CVE-2026-35189)\n\nIt was discovered that OpenSSL incorrectly handled QUIC unvalidated\namplification credit accounting. An attacker could possibly use this\nissue to cause a denial of service. This issue only affected\nUbuntu 26.04 LTS. (CVE-2026-35191)\n\nIt was discovered that OpenSSL incorrectly implemented scalar\nmultiplication for non-NIST elliptic curves. An attacker could possibly\nuse this issue to perform a timing side-channel attack and obtain\nsensitive information. (CVE-2026-54872)\n\nIt was discovered that OpenSSL incorrectly implemented SM2 scalar\nmultiplication on ARM64 and RISC-V architectures. An attacker could\npossibly use this issue to perform a timing side-channel attack and\nobtain sensitive information. This issue only affected Ubuntu 26.04 LTS.\n(CVE-2026-54875)\n\nIt was discovered that OpenSSL incorrectly handled SSL context switching\nduring a TLS handshake. An attacker could possibly use this issue to\ncause an out-of-bounds read, resulting in a denial of service or\nobtaining sensitive information. This issue only affected Ubuntu 26.04 LTS.\n(CVE-2026-72897)\n\nIt was discovered that OpenSSL incorrectly enforced QUIC connection-\nlevel flow control for streams. An attacker could possibly use this\nissue to cause OpenSSL to consume excessive memory, resulting in a\ndenial of service. This issue only affected Ubuntu 26.04 LTS.\n(CVE-2026-75804)\n\nIt was discovered that OpenSSL incorrectly handled a NULL pointer in\nCMP client revocation response processing. An attacker could possibly\nuse this issue to cause a denial of service. (CVE-2026-75805)\n\nIt was discovered that OpenSSL incorrectly handled undersized DTLS 1.2\nAEAD records before authentication. An attacker could possibly use this\nissue to cause a denial of service. (CVE-2026-75806)\n\nIt was discovered that OpenSSL incorrectly implemented SM2 signature\ngeneration. An attacker could possibly use this issue to perform a\ntiming side-channel attack and obtain sensitive information.\n(CVE-2026-77696)\n\nIt was discovered that OpenSSL incorrectly handled DTLS retransmission\nof handshake messages. An attacker could possibly use this issue to\ncause incorrect handshake behavior or a denial of service.\n(CVE-2026-84782)\n\nIt was discovered that OpenSSL incorrectly handled QUIC\nRETIRE_CONNECTION_ID frames. An attacker could possibly use this issue\nto cause OpenSSL to consume excessive memory, resulting in a denial of\nservice. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-84784)",
  "id": "USN-8847-1",
  "modified": "2026-09-30T20:43:33Z",
  "published": "2026-09-29T18:19:43Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8847-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-35189"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-35191"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-54872"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-54875"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-72897"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-75804"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-75805"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-75806"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-77696"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-84782"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-84784"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "openssl vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2026-35189",
    "UBUNTU-CVE-2026-35191",
    "UBUNTU-CVE-2026-54872",
    "UBUNTU-CVE-2026-54875",
    "UBUNTU-CVE-2026-72897",
    "UBUNTU-CVE-2026-75804",
    "UBUNTU-CVE-2026-75805",
    "UBUNTU-CVE-2026-75806",
    "UBUNTU-CVE-2026-77696",
    "UBUNTU-CVE-2026-84782",
    "UBUNTU-CVE-2026-84784"
  ]
}

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-2026-75806 (CVE-2026-75806)

CVE-2026-75806 (GCVE-0-2026-75806)

USN-8847-1 (UBUNTU-CVE-2026-35189)

Tags

Sightings

Nomenclature

Related by attack behaviour