ubuntu-cve-2026-40046
Vulnerability from osv_ubuntu
Published
2026-04-09 17:16
Modified
2026-05-20 15:27
Summary
Details

Integer Overflow or Wraparound vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ MQTT. The fix for "CVE-2025-66168: MQTT control packet remaining length field is not properly validated" was only applied to 5.19.2 (and future 5.19.x) releases but was missed for all 6.0.0+ versions. This issue affects Apache ActiveMQ: from 6.0.0 before 6.2.4; Apache ActiveMQ All: from 6.0.0 before 6.2.4; Apache ActiveMQ MQTT: from 6.0.0 before 6.2.4. Users are recommended to upgrade to version 6.2.4 or a 5.19.x version starting with 5.19.2 or later (currently latest is 5.19.5), which fixes the issue.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "activemq",
            "binary_version": "5.13.2+dfsg-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "libactivemq-java",
            "binary_version": "5.13.2+dfsg-2ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "activemq",
        "purl": "pkg:deb/ubuntu/activemq@5.13.2+dfsg-2ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.6.0+dfsg1-4+deb8u1ubuntu1",
        "5.6.0+dfsg1-5",
        "5.13.2+dfsg-2",
        "5.13.2+dfsg-2ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "activemq",
            "binary_version": "5.15.8-2~18.04.1~esm1"
          },
          {
            "binary_name": "libactivemq-java",
            "binary_version": "5.15.8-2~18.04.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "activemq",
        "purl": "pkg:deb/ubuntu/activemq@5.15.8-2~18.04.1~esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.14.5-3",
        "5.15.2-2",
        "5.15.3-2",
        "5.15.8-2~18.04",
        "5.15.8-2~18.04.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "activemq",
            "binary_version": "5.15.11-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libactivemq-java",
            "binary_version": "5.15.11-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "activemq",
        "purl": "pkg:deb/ubuntu/activemq@5.15.11-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.15.10-1",
        "5.15.11-1",
        "5.15.11-1ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "activemq",
            "binary_version": "5.16.1-1ubuntu0.1"
          },
          {
            "binary_name": "libactivemq-java",
            "binary_version": "5.16.1-1ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "activemq",
        "purl": "pkg:deb/ubuntu/activemq@5.16.1-1ubuntu0.1?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.16.1-1",
        "5.16.1-1ubuntu0.1~esm1",
        "5.16.1-1ubuntu0.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "activemq",
            "binary_version": "5.17.6+dfsg-1"
          },
          {
            "binary_name": "libactivemq-java",
            "binary_version": "5.17.6+dfsg-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "activemq",
        "purl": "pkg:deb/ubuntu/activemq@5.17.6+dfsg-1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.17.2+dfsg-2",
        "5.17.6+dfsg-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "activemq",
            "binary_version": "5.17.6+dfsg-2"
          },
          {
            "binary_name": "libactivemq-java",
            "binary_version": "5.17.6+dfsg-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "activemq",
        "purl": "pkg:deb/ubuntu/activemq@5.17.6+dfsg-2?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.17.6+dfsg-1",
        "5.17.6+dfsg-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "activemq",
            "binary_version": "5.17.6+dfsg-2"
          },
          {
            "binary_name": "libactivemq-java",
            "binary_version": "5.17.6+dfsg-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "activemq",
        "purl": "pkg:deb/ubuntu/activemq@5.17.6+dfsg-2?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.17.6+dfsg-2"
      ]
    }
  ],
  "aliases": [],
  "details": "Integer Overflow or Wraparound vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ MQTT. The fix for \"CVE-2025-66168: MQTT control packet remaining length field is not properly validated\" was only applied to 5.19.2 (and future 5.19.x) releases but was missed for all 6.0.0+ versions. This issue affects Apache ActiveMQ: from 6.0.0 before 6.2.4; Apache ActiveMQ All: from 6.0.0 before 6.2.4; Apache ActiveMQ MQTT: from 6.0.0 before 6.2.4. Users are recommended to upgrade to version 6.2.4 or a 5.19.x version starting with 5.19.2 or later (currently latest is 5.19.5), which fixes the issue.",
  "id": "UBUNTU-CVE-2026-40046",
  "modified": "2026-05-20T15:27:25Z",
  "published": "2026-04-09T17:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-40046"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-40046"
    },
    {
      "type": "REPORT",
      "url": "https://activemq.apache.org/security-advisories.data/CVE-2026-40046-announcement.txt"
    },
    {
      "type": "REPORT",
      "url": "https://lists.apache.org/thread/zdntj5rcgjjzrpow84o339lzldy68zrg"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-66168"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "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": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-40046"
  ]
}



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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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