What is CVE-2026-125192?

CVE-2026-125192 is a low-severity vulnerability in Ffmpeg, classified under Use of Uninitialized Resource. CVSS score: 3.3/10. Published 2026-11-09.

How severe is CVE-2026-125192?

Low severity. CVSS v3 base score is 3.3 out of 10.

Vulnerability in Ffmpeg

CVE-2026-125192

FFmpeg through 9.0.2 contains an uninitialized memory vulnerability in the DXA decoder in libavcodec/dxa.c that allows attackers to disclose heap memory via crafted DXA files. Attackers can supply a DXA video with a type 4 frame that copies the uninitialized decomp_buf buffer into output pictures, exposing leftover heap contents in decoded frames.

Published 2026-11-09.

CVSS v3 metric

CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Ffmpeg

Weakness classification (CWE)

CWE-908 — Use of Uninitialized Resource

References

code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24463 (issue-tracking)
github.com/FFmpeg/FFmpeg (product)
github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/dxa.c (technical-description)
github.com/FFmpeg/FFmpeg/commit/a6e5d5ff993a525933d8d8f29071eb6c74b0436a (patch)
www.vulncheck.com/advisories/ffmpeg-through-9.0.2-heap-memory-disclosure-via-dx… (third-party-advisory)

Frequently asked questions

What is CVE-2026-125192?: CVE-2026-125192 is a low-severity vulnerability in Ffmpeg, classified under Use of Uninitialized Resource. CVSS score: 3.3/10. Published 2026-11-09.
How severe is CVE-2026-125192?: Low severity. CVSS v3 base score is 3.3 out of 10.