Vulnerability-Lookup

OESA-2025-1507 (CVE-2025-27533)

Vulnerability from osv_openeuler – Published: 2025-05-16 11:08 – Updated: 2026-08-06 11:08 – Source website

Summary

activemq security update

Details

The most popular and powerful open source messaging and Integration Patterns server.

Security Fix(es):

Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ.

During unmarshalling of OpenWire commands the size value of buffers was not properly validated which could lead to excessive memory allocation and be exploited to cause a denial of service (DoS) by depleting process memory, thereby affecting applications and services that rely on the availability of the ActiveMQ broker when not using mutual TLS connections. This issue affects Apache ActiveMQ: from 6.0.0 before 6.1.6, from 5.18.0 before 5.18.7, from 5.17.0 before 5.17.7, before 5.16.8. ActiveMQ 5.19.0 is not affected.

Users are recommended to upgrade to version 6.1.6+, 5.19.0+, 5.18.7+, 5.17.7, or 5.16.8 or which fixes the issue.

Existing users may implement mutual TLS to mitigate the risk on affected brokers.(CVE-2025-27533)

Severity

4.9 (Medium)


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

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2025-27533	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "noarch": [
          "activemq-5.16.8-1.oe2203sp4.noarch.rpm",
          "activemq-javadoc-5.16.8-1.oe2203sp4.noarch.rpm"
        ],
        "src": [
          "activemq-5.16.8-1.oe2203sp4.src.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP4",
        "name": "activemq",
        "purl": "pkg:rpm/openEuler/activemq\u0026distro=openEuler-22.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.16.8-1.oe2203sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "noarch": [
          "activemq-5.16.8-1.oe2403.noarch.rpm",
          "activemq-javadoc-5.16.8-1.oe2403.noarch.rpm",
          "activemq-5.16.8-1.oe2403sp1.noarch.rpm",
          "activemq-javadoc-5.16.8-1.oe2403sp1.noarch.rpm"
        ],
        "src": [
          "activemq-5.16.8-1.oe2403.src.rpm",
          "activemq-5.16.8-1.oe2403sp1.src.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS",
        "name": "activemq",
        "purl": "pkg:rpm/openEuler/activemq\u0026distro=openEuler-24.03-LTS"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.16.8-1.oe2403sp1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "noarch": [
          "activemq-5.16.8-1.oe2403sp1.noarch.rpm",
          "activemq-javadoc-5.16.8-1.oe2403sp1.noarch.rpm"
        ],
        "src": [
          "activemq-5.16.8-1.oe2403sp1.src.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP1",
        "name": "activemq",
        "purl": "pkg:rpm/openEuler/activemq\u0026distro=openEuler-24.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.16.8-1.oe2403sp1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "noarch": [
          "activemq-5.16.8-1.oe2003sp4.noarch.rpm",
          "activemq-javadoc-5.16.8-1.oe2003sp4.noarch.rpm"
        ],
        "src": [
          "activemq-5.16.8-1.oe2003sp4.src.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP4",
        "name": "activemq",
        "purl": "pkg:rpm/openEuler/activemq\u0026distro=openEuler-20.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.16.8-1.oe2003sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "noarch": [
          "activemq-5.16.8-1.oe2203sp3.noarch.rpm",
          "activemq-javadoc-5.16.8-1.oe2203sp3.noarch.rpm"
        ],
        "src": [
          "activemq-5.16.8-1.oe2203sp3.src.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP3",
        "name": "activemq",
        "purl": "pkg:rpm/openEuler/activemq\u0026distro=openEuler-22.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.16.8-1.oe2203sp3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": "The most popular and powerful open source messaging and Integration Patterns\nserver.\r\n\r\nSecurity Fix(es):\n\nMemory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ.\n\nDuring unmarshalling of OpenWire commands the size value of buffers was not properly validated which could lead to excessive memory allocation and be exploited to cause a denial of service (DoS) by depleting process memory, thereby affecting applications and services that rely on the availability of the ActiveMQ broker when not using mutual TLS connections.\nThis issue affects Apache ActiveMQ: from 6.0.0 before 6.1.6, from 5.18.0 before 5.18.7, from 5.17.0 before 5.17.7, before 5.16.8. ActiveMQ 5.19.0 is not affected.\n\nUsers are recommended to upgrade to version 6.1.6+, 5.19.0+,  5.18.7+, 5.17.7, or 5.16.8 or which fixes the issue.\n\nExisting users may implement mutual TLS to mitigate the risk on affected brokers.(CVE-2025-27533)",
  "id": "OESA-2025-1507",
  "modified": "2026-08-06T11:08:36Z",
  "published": "2025-05-16T11:08:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-1507"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-27533"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "activemq security update",
  "upstream": [
    "CVE-2025-27533"
  ]
}

CVE-2025-27533 (GCVE-0-2025-27533)

Vulnerability from cvelistv5 – Published: 2025-05-07 08:59 – Updated: 2025-11-03 19:45

Title

Apache ActiveMQ: Unchecked buffer length can cause excessive memory allocation

Summary

Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ. During unmarshalling of OpenWire commands the size value of buffers was not properly validated which could lead to excessive memory allocation and be exploited to cause a denial of service (DoS) by depleting process memory, thereby affecting applications and services that rely on the availability of the ActiveMQ broker when not using mutual TLS connections. This issue affects Apache ActiveMQ: from 6.0.0 before 6.1.6, from 5.18.0 before 5.18.7, from 5.17.0 before 5.17.7, before 5.16.8. ActiveMQ 5.19.0 is not affected. Users are recommended to upgrade to version 6.1.6+, 5.19.0+, 5.18.7+, 5.17.7, or 5.16.8 or which fixes the issue. Existing users may implement mutual TLS to mitigate the risk on affected brokers.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/AU:Y/R:A/V:D/RE:M/U:Red

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-05-07 13:59 UTC

CWE

CWE-789 - Memory Allocation with Excessive Size Value

Assigner

apache mitre root

References

3 references

URL	Tags
https://lists.apache.org/thread/8hcm25vf7mchg4zbb…	vendor-advisory
http://www.openwall.com/lists/oss-security/2025/05/06/1
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

1 product

Vendor	Product	Version
Apache Software Foundation	Apache ActiveMQ	Affected: 6.0.0 , < 6.1.6 (semver) Affected: 5.18.0 , < 5.18.7 (semver) Affected: 5.17.0 , < 5.17.7 (semver) Affected: 5.16.0 , < 5.16.8 (semver)

Show details on NVD website

JSON

To clipboard

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            "url": "https://lists.debian.org/debian-lts-announce/2025/06/msg00020.html"
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                "role": "CISA Coordinator",
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        "providerMetadata": {
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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.
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