CVE-2026-124000 nasa-jpl ion-dtn: Heap-based Buffer Overflow

6.9 mediumEPSS 0.5%

Medium (6.9) in nasa-jpl ion-dtn. EPSS 0.5% estimated probability of exploitation activity in the next 30 days.

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Severity
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Affected
Versions
Attack patterns (CAPEC)
References
Your exposure

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.

Severity

CVSS 4.0

6.9 medium

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

CVSS 3.1

5.3 medium

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

EPSS: 0.5% estimated probability of exploitation activity in the next 30 days; 43rd percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
CISA's assessment (SSVC): Exploitation: none · Automatable: yes · Technical impact: partial, assessed 2026-11-09. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
CWE: CWE-122 Heap-based Buffer Overflow
Published: 2026-11-09 19:16 UTC
Modified: 2026-11-09 19:16 UTC
Assigned by: VulnCheck (CNA)
NVD analysis: Deferred: the NVD does not plan to analyze it
Record from: the NVD, synced 2026-11-09 19:32 UTC

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Affected

nasa-jpl:ion-dtn

Versions

From the CNA's record in the CVE List.

Product	Affected
nasa-jpl ION-DTN	from 2.1.0 through 4.2.0

Attack patterns (CAPEC)

CAPEC-92 Forced Integer Overflow Likelihood: High · Severity: High

The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.

References

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