High severity7.0NVD Advisory· Published Nov 9, 2026
CVE-2026-125204
CVE-2026-125204
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.
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Affected products
1Patches
Vulnerability mechanics
References
4- code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25682nvd
- github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/libwebpenc_common.cnvd
- github.com/FFmpeg/FFmpeg/commit/9b99973b2bbecee0b7e1e57035b95498b42f54a6nvd
- www.vulncheck.com/advisories/ffmpeg-through-9.0.2-heap-buffer-overflow-in-libwebp-encoder-conditional-replenishmentnvd
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