CVE-2026-125204
HIGH
NVD
CVSS Score
7
Severity
HIGH
Published
Nov 09, 2026
Vendor
unknown
Description
FFmpeg through 9.0.2 contains a heap buffer overflow in ff_libwebp_get_frame() in libwebpenc_common.c that lets attackers corrupt memory when cr_threshold is set. Attackers can supply crafted media that increases resolution mid-stream, causing memcpy() to write pixel data past the stale reference frame and crash applications.
References
- https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25682
- https://github.com/FFmpeg/FFmpeg
- https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/libwebpenc_common.c#L230
- https://github.com/FFmpeg/FFmpeg/commit/9b99973b2bbecee0b7e1e57035b95498b42f54a6
- https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-heap-buffer-overflow-in-libwebp-encoder-conditional-replenishment