CVE-2026-125227

HighCVSS 7.0/10Last modified Nov 10, 2026

Description

FFmpeg through 9.0.2 contains an integer overflow in cbs_jpeg_write_scan() in libavcodec/cbs_jpeg.c that causes a heap buffer overflow on 32-bit builds. Attackers can supply a crafted MJPEG/JPEG stream with a scan of 512 MiB or more, processed by CBS bitstream filters like filter_units, to corrupt the heap or crash the application.

Metrics

CVSS 3.1 7.0/10CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-190

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

VendorProductVersions
FFmpegFFmpeg<= 9.0.2

References

Timeline

Published
Nov 9, 2026
Last modified
Nov 10, 2026
NVD status
Awaiting Analysis

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CVE-2026-125227: High severity, CVSS 7.0 | Vulnix