Dashboard / CVE-2026-121626

CVE-2026-121626

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 63/100
Published: 2026-11-03 Modified: 2026-11-12 First seen: 2026-11-03 Status: active

Attack Surface

Network No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: None
S: X
AT: Present
VC: None
VI: None
VA: Low

Description

GNU Gatekeeper (gnugk) before 5.16 contains an out-of-bounds read vulnerability in H46024Socket::ReceivedProbePacket() that allows remote attackers to cause a heap over-read by sending short probe packets. Attackers can send a short application-defined RTCP packet to the media port during H.460.24 probing to read past the heap allocation and possibly crash the gatekeeper.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
willamowius gnugk 0 < 5.16
willamowius gnugk 0 < 5.16

References & Advisories (5)

Bug Bounty Relevance

63 / 100
✓ Network accessible
✓ No authentication
✓ No user interaction

CVSS Score

6.3 / 10.0 v4.0
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/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

0.34%
Raw Score 0.003380
Percentile 27.6%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00338
2026-11-13
0.00338
2026-11-12
0.00338
2026-11-10
0.00338
2026-11-09
0.00338
2026-11-08
0.00338
2026-11-07
0.00338
2026-11-06
0.00338
2026-11-05
0.00338
2026-11-04
0.00338

Intelligence Sources

mitre ref →
nvd ref →

External Links