Dashboard / CVE-2026-125243

CVE-2026-125243

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 35/100
Published: 2026-11-09 Modified: 2026-11-10 First seen: 2026-11-09 Status: active

Attack Surface

Low Complexity No Auth

CVSS Vector Breakdown

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

Description

FFmpeg through 9.0.2 contains an uninitialized memory disclosure vulnerability in ff_jpegls_decode_picture() in libavcodec/jpeglsdec.c, which decodes 16-bit line-interleaved JPEG-LS scans as 8-bit samples. Attackers can supply a crafted single-component JPEG-LS image with the ILV byte set to 1, causing decoded GRAY16 frames to expose leftover heap memory.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
FFmpeg FFmpeg 0
FFmpeg FFmpeg 0

References & Advisories (5)

Bug Bounty Relevance

35 / 100
✓ No authentication
✓ Low complexity

CVSS Score

4.8 / 10.0 v4.0
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/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

0.12%
Raw Score 0.001200
Percentile 1.8%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00120
2026-11-12
0.00120
2026-11-10
0.00120

Intelligence Sources

mitre ref →
nvd ref →

External Links