CVE-2026-125262

HIGH
MEDIUM Priority: 0.01 BB Relevance: 42/100
Published: 2026-11-09 Modified: 2026-11-13 First seen: 2026-11-09 Status: active

Attack Surface

Low Complexity No Auth Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Local
AC: Low
PR: None
UI: Passive
AT: None
VC: High
VI: High
VA: High

Description

FFmpeg through 9.0.2 contains a heap buffer overflow vulnerability in libavcodec/lcevcdec.c because LCEVC output picture dimensions are not validated against the allocated frame. Attackers can embed crafted LCEVC enhancement data with differing global configurations in H.264 or HEVC streams to corrupt heap memory in decoding applications.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
FFmpeg FFmpeg 7.1
FFmpeg FFmpeg 7.1

Bug Bounty Relevance

42 / 100
✓ No authentication
✓ Low complexity

CVSS Score

8.5 / 10.0 v4.0
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

EPSS — Exploitation Probability

0.14%
Raw Score 0.001440
Percentile 3.8%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00144
2026-11-12
0.00144
2026-11-10
0.00144

Intelligence Sources

mitre ref →
nvd ref →