CVE-2026-125099

LOWCVSS 3.3/10EPSS 0.16%

Last modified

CVE-2026-125099 is a low-severity vulnerability rated 3.3/10 on the CVSS scale. FFmpeg through 9.0.2 contains an uninitialized memory disclosure vulnerability in the GEM raster image decoder in libavcodec/gemdec.c that exposes uninitialized row-buffer bytes. Attackers can supply a crafted GEM .img image using SKIP or pattern opcodes to copy uninitialized heap memory into decoded frames, disclosing heap contents.. EPSS estimates a 0.16% chance of exploitation in the next 30 days.

Description

FFmpeg through 9.0.2 contains an uninitialized memory disclosure vulnerability in the GEM raster image decoder in libavcodec/gemdec.c that exposes uninitialized row-buffer bytes. Attackers can supply a crafted GEM .img image using SKIP or pattern opcodes to copy uninitialized heap memory into decoded frames, disclosing heap contents.

Metrics

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
FFmpegFFmpeg<= 9.0.2

References

Timeline

Published
Last Modified
Status
Awaiting Analysis

Frequently Asked Questions

What is CVE-2026-125099?
FFmpeg through 9.0.2 contains an uninitialized memory disclosure vulnerability in the GEM raster image decoder in libavcodec/gemdec.c that exposes uninitialized row-buffer bytes. Attackers can supply a crafted GEM .img image using SKIP or pattern opcodes to copy uninitialized heap memory into decoded frames, disclosing heap contents.
How severe is CVE-2026-125099?
CVE-2026-125099 has a CVSS score of 3.3/10 (LOW severity). The EPSS model estimates a 0.16% probability of exploitation in the next 30 days.
How do I fix CVE-2026-125099?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST