Vulnerability-Lookup

Vulnerability from bitnami_vulndb

Published

2026-04-13 05:36

Modified

2026-04-13 06:11

Summary

Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ MQTT: Missing fix for CVE-2025-66168: MQTT control packet remaining length field is not properly validated

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.

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "activemq",
        "purl": "pkg:bitnami/activemq"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.0.0"
            },
            {
              "fixed": "6.2.4"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-40046"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:apache:activemq:*:*:*:*:*:maven:*:*"
    ],
    "severity": "High"
  },
  "details": "Integer Overflow or Wraparound vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ MQTT.\n\nThe 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.\n\n\nThis 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.\n\n\n\nUsers 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": "BIT-activemq-2026-40046",
  "modified": "2026-04-13T06:11:47.324Z",
  "published": "2026-04-13T05:36:23.428Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://activemq.apache.org/security-advisories.data/CVE-2026-40046-announcement.txt"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/zdntj5rcgjjzrpow84o339lzldy68zrg"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40046"
    },
    {
      "type": "WEB",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-66168"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ MQTT: Missing fix for CVE-2025-66168: MQTT control packet remaining length field is not properly validated"
}

CVE-2026-40046 (GCVE-0-2026-40046)

Vulnerability from cvelistv5 – Published: 2026-04-09 15:58 – Updated: 2026-04-10 19:41

Title

Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ MQTT: Missing fix for CVE-2025-66168: MQTT control packet remaining length field is not properly validated

Summary

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 ?

No CVSS data available.

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

apache

References

URL

Tags

	https://www.cve.org/CVERecord?id=CVE-2025-66168	related
	https://activemq.apache.org/security-advisories.d…	vendor-advisory
	https://lists.apache.org/thread/zdntj5rcgjjzrpow8…	vendor-advisory

Impacted products

Vendor

Product

Version

Apache Software Foundation

Apache ActiveMQ

Affected: 6.0.0 , < 6.2.4 (semver)

	Apache Software Foundation	Apache ActiveMQ All	Affected: 6.0.0 , < 6.2.4 (semver)
	Apache Software Foundation	Apache ActiveMQ MQTT	Affected: 6.0.0 , < 6.2.4 (semver)

Credits

Adrien Bernard

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-2026-40046",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-10T19:39:38.679321Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-10T19:41:00.618Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://repo.maven.apache.org/maven2",
          "defaultStatus": "unaffected",
          "packageName": "org.apache.activemq:apache-activemq",
          "product": "Apache ActiveMQ",
          "vendor": "Apache Software Foundation",
          "versions": [
            {
              "lessThan": "6.2.4",
              "status": "affected",
              "version": "6.0.0",
              "versionType": "semver"
            }
          ]
        },
        {
          "collectionURL": "https://repo.maven.apache.org/maven2",
          "defaultStatus": "unaffected",
          "packageName": "org.apache.activemq:activemq-all",
          "product": "Apache ActiveMQ All",
          "vendor": "Apache Software Foundation",
          "versions": [
            {
              "lessThan": "6.2.4",
              "status": "affected",
              "version": "6.0.0",
              "versionType": "semver"
            }
          ]
        },
        {
          "collectionURL": "https://repo.maven.apache.org/maven2",
          "defaultStatus": "unaffected",
          "packageName": "org.apache.activemq:activemq-mqtt",
          "product": "Apache ActiveMQ MQTT",
          "vendor": "Apache Software Foundation",
          "versions": [
            {
              "lessThan": "6.2.4",
              "status": "affected",
              "version": "6.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Adrien Bernard"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
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              "type": "text/html",
              "value": "\u003cp\u003e\n\n\u003c/p\u003e\u003cp\u003eInteger Overflow or Wraparound vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ MQTT.\u003c/p\u003eThe 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.\u003cbr\u003e\u003cp\u003e\n\n\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003eThis 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.\u003c/span\u003e\n\n\u003c/p\u003e\u003cp\u003eUsers 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.\u003c/p\u003e\u003cp\u003e\u003c/p\u003e"
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      "metrics": [
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        "orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
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      "references": [
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          "url": "https://activemq.apache.org/security-advisories.data/CVE-2026-40046-announcement.txt"
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          "url": "https://lists.apache.org/thread/zdntj5rcgjjzrpow84o339lzldy68zrg"
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      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ MQTT: Missing fix for CVE-2025-66168: MQTT control packet remaining length field is not properly validated",
      "x_generator": {
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  },
  "cveMetadata": {
    "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
    "assignerShortName": "apache",
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    "datePublished": "2026-04-09T15:58:32.966Z",
    "dateReserved": "2026-04-08T15:21:53.253Z",
    "dateUpdated": "2026-04-10T19:41:00.618Z",
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}

Sightings

Author	Source	Type	Date

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.

Action not permitted

Vulnerability from bitnami_vulndb

CVE-2026-40046 (GCVE-0-2026-40046)

Tags

Sightings

Nomenclature