CVE-2025-27533

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-789

Affected software

No affected versions have been published.

Timeline

Published: May 7, 2025
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2025

CVE-2025-275345.5in OpenHarmony v5.0.2 and prior versions allow a local attacker case DOS through missing release of memory.CVE-2025-275354.1Exposed ioctl with insufficient access control in the firmware for some Intel(R) Ethernet Connection E825-C. before version NVM ver. 3.84 wi CVE-2025-275365.5in OpenHarmony v5.0.3 and prior versions allow a local attacker cause DOS through type confusion.CVE-2025-275375.5Improper input validation for some Edge Orchestrator software before version 24.11.1 for Intel(R) Tiber(TM) Edge Platform may allow an authe CVE-2025-275382.7Mattermost versions 10.5.x <= 10.5.1, 9.11.x <= 9.11.9 fail to enforce MFA checks in PUT /api/v4/users/user-id/mfa when the requesting user CVE-2025-275399.8A vulnerability has been identified in TeleControl Server Basic (All versions < V3.1.2.2). The affected application is vulnerable to SQL inj CVE-2025-27548.8A vulnerability was found in Open Asset Import Library Assimp 5.4.3. It has been declared as critical. Affected by this vulnerability is the CVE-2025-275409.8A vulnerability has been identified in TeleControl Server Basic (All versions < V3.1.2.2). The affected application is vulnerable to SQL inj CVE-2025-27558.8A vulnerability was found in Open Asset Import Library Assimp 5.4.3. It has been rated as critical. Affected by this issue is the function A CVE-2025-275503.5IBM Jazz Reporting Service could allow an authenticated user on the host network to obtain sensitive information about other projects that r CVE-2025-275514.0DBIx::Class::EncodedColumn use the rand() function, which is not cryptographically secure to salt password hashes. This vulnerability is as CVE-2025-275524.0DBIx::Class::EncodedColumn use the rand() function, which is not cryptographically secure to salt password hashes. This vulnerability is as