What is CVE-2026-52297?

CVE-2026-52297 is a low-severity vulnerability in Ffmpeg, classified under Out-of-bounds Read. CVSS score: 2.9/10. Published 2026-09-13.

How severe is CVE-2026-52297?

Low severity. CVSS v3 base score is 2.9 out of 10.

Out-of-bounds Read in Ffmpeg

CVE-2026-52297

FFmpeg before 9.0 has an out-of-bounds read because there is insufficiently padded extradata in the MOV parsing path in mov_read_iacb in libavformat/mov.c.

Vulnerability class: Buffer Overflow

Published 2026-09-13 · last modified 2026-10-14.

CVSS v3 metric

CVSS v3 base score 2.9 (Low). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.001 (1.6th percentile), scored 2026-10-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 1.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.001 · change: -0.000

Affected products

Ffmpeg

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

code.ffmpeg.org/FFmpeg/FFmpeg/pulls/22988 (Patch, Issue Tracking)
git.ffmpeg.org/gitweb/ffmpeg.git/commit/8439e0203744a30d280668fcd086f74ed5001da1 (Patch)
github.com/Kenan-Kamel/VulnerabilitiesReference/tree/main/FFmpeg/ExtradataPaddi… (Third Party Advisory)

Frequently asked questions

What is CVE-2026-52297?: CVE-2026-52297 is a low-severity vulnerability in Ffmpeg, classified under Out-of-bounds Read. CVSS score: 2.9/10. Published 2026-09-13.
How severe is CVE-2026-52297?: Low severity. CVSS v3 base score is 2.9 out of 10.