CVE-2026-124000

MEDIUM
MEDIUM Priority: 0.03 BB Relevance: 74/100
Published: 2026-11-09 Modified: 2026-11-09 First seen: 2026-11-09 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
AT: None
VC: None
VI: None
VA: Low

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.

Weakness Classification (1)

Affected Software (3)

VendorProductVersion
nasa-jpl ION-DTN 2.1.0
nasa-jpl ION-DTN 2.1.0
nasa-jpl ION-DTN 2.1.0

Bug Bounty Relevance

74 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

6.9 / 10.0 v4.0
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

EPSS — Exploitation Probability

0.50%
Raw Score 0.005010
Percentile 43.5%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00501
2026-11-12
0.00501
2026-11-10
0.00501

Intelligence Sources

mitre ref →
nvd ref →