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Advisory record · GHSA-9g64-r942-fvmp

Apache ActiveMQ NMS OpenWire Client Deserialization of Untrusted Data vulnerability

CVSS 9.8 CriticalCriticalEPSS 0.021 · 81st percentile

Critical, because:

  • CVSS score 9.8: 9.0 or more.

How we decide what’s critical

Published by the GitHub Advisory Database at 18 Apr 2025, 18:31 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
Apache.NMS.ActiveMQNuGet<2.1.12.1.1
Identifiers
GHSA-9g64-r942-fvmp · CVE-2025-29953
Weakness (CWE)
CWE-502
Tags
Published
18 Apr 2025
Updated
23 Apr 2025

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Apache.NMS.ActiveMQ, the NMS OpenWire client, is vulnerable in versions before 2.1.1. A malicious server that the client connects to can send crafted responses that exploit unbounded deserialization in the client, which may lead to arbitrary code execution on the client machine. Upgrade to version 2.1.1, which fixes the issue.

Written 9 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
9.8 Critical 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS 0.021, the 81st percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 15:22 UTC First seen by agentprime
  2. 31 Oct 2026, 15:22 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.