Description
FFmpeg 2.1 through 9.0.2 contains a use of uninitialized resource vulnerability in the PCX decoder that allows attackers to leak heap memory through truncated RLE scanlines. Attackers can craft a PCX image whose RLE data ends early, causing pcx_decode_frame() to copy uninitialized av_malloc() buffer contents into visible decoded pixels.
Published: 2026-11-01
Score: 6.8 Medium
EPSS: n/a
KEV: No
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Sun, 01 Nov 2026 01:00:00 +0000

Type Values Removed Values Added
Description FFmpeg 2.1 through 9.0.2 contains a use of uninitialized resource vulnerability in the PCX decoder that allows attackers to leak heap memory through truncated RLE scanlines. Attackers can craft a PCX image whose RLE data ends early, causing pcx_decode_frame() to copy uninitialized av_malloc() buffer contents into visible decoded pixels.
Title FFmpeg 2.1 through 9.0.2 Uninitialized Memory Leak via PCX Decoder
First Time appeared Ffmpeg
Ffmpeg ffmpeg
Weaknesses CWE-908
CPEs cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*
Vendors & Products Ffmpeg
Ffmpeg ffmpeg
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N'}

cvssV4_0

{'score': 6.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}

Subscriptions

Ffmpeg Ffmpeg
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-01T00:57:10.036Z

Reserved: 2026-10-31T22:05:57.768Z

Link: CVE-2026-120244

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-01T01:17:17.787

Modified: 2026-11-01T01:17:17.787

Link: CVE-2026-120244

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-01T02:30:18Z

Weaknesses
  • CWE-908

    Use of Uninitialized Resource