Dashboard / CVE-2026-123999

CVE-2026-123999

HIGH
MEDIUM Priority: 0.04 BB Relevance: 77/100
Published: 2026-11-09 Modified: 2026-11-12 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
S: X
AT: None
VC: None
VI: None
VA: High

Description

NASA JPL ION-DTN 3.6.2 through 4.2.0 contains a heap-based buffer overflow in the Network Management daemon (nm_mgr) string-formatting logic that allows a malicious or misconfigured agent to trigger an out-of-bounds write by sending deeply nested AMP payloads that exceed fixed-size buffer allocations through unbounded strcat operations. Attackers can transmit oversized AMP reports, tables, or macros over the UDP CLA/AMP path or trigger the flaw locally via interactive UI rendering to crash nm_mgr and cause a denial of service halting telemetry collection and operator visibility.

Weakness Classification (1)

Affected Software (3)

VendorProductVersion
nasa-jpl ION-DTN 3.6.2
nasa-jpl ION-DTN 3.6.2
nasa-jpl ION-DTN 3.6.2

References & Advisories (3)

Bug Bounty Relevance

77 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

8.7 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.48%
Raw Score 0.004790
Percentile 41.9%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00479
2026-11-12
0.00479
2026-11-10
0.00479

Intelligence Sources

mitre ref →
nvd ref →

External Links