Description
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.
Published: 2026-11-09
Score: 6.9 Medium
EPSS: < 1% Very Low
KEV: No
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Remediation

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History

Wed, 11 Nov 2026 16:00:00 +0000

Type Values Removed Values Added
First Time appeared Nasajpl
Nasajpl iondtn
Vendors & Products Nasajpl
Nasajpl iondtn

Mon, 09 Nov 2026 19:00:00 +0000


Mon, 09 Nov 2026 18:45:00 +0000

Type Values Removed Values Added
Description 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.
Title ION-DTN 2.1.0-4.2.0 Heap Buffer Under-allocation DoS in amsd
Weaknesses CWE-122
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-09T22:58:58.044Z

Reserved: 2026-11-06T18:38:38.543Z

Link: CVE-2026-124000

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-11-09T19:16:47.843

Modified: 2026-11-09T23:17:17.870

Link: CVE-2026-124000

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-11T16:00:03Z

Weaknesses