CVE-2026-124000

CVSS 6.9 (medium) · published 2026-11-09

NASA JPL ION-DTN 2.1.0 through 4.2.0 contains a heap buffer under-allocation vulnerability in the Asynchronous Message Service daemon (amsd) that allows a rogue or misconfigured peer to trigger an out-of-bounds write by sending crafted Meta-AMS (MAMS) configuration management messages that are processed without cryptographic authentication. Attackers can exploit the insufficient buffer size calculation for the internal state-event object to crash the active Configuration Server thread, causing a denial of service and potentially destabilizing subsequent shared-memory allocations in amsd.

Weakness: CWE-122

Source: NVD CVE-2026-124000

References

• https://github.com/nasa-jpl/ION-DTN/releases/tag/ion-open-source-4.2.1-a.2
• https://github.com/nasa-jpl/ION-DTN/security/advisories/GHSA-h28r-fr59-c79c
• https://www.vulncheck.com/advisories/ion-dtn-heap-buffer-under-allocation-dos-in-amsd

Check your software

Connect an AI agent to the FixLane MCP server or ask the Telegram bot to check what you have installed against incidents with a verified fixed version.