PT-2026-141046
CVE-2026-125218
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Published
2026-11-09
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Updated
2026-11-09
Description by
CVSS 3.1
7.0
HighMetricsAV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
FFmpeg through 9.0.2 contains a heap buffer overflow vulnerability in the APNG encoder's encode apng() function in libavcodec/pngenc.c when frame size changes mid-stream. Attackers can supply crafted media whose resolution grows mid-stream, causing APNG DISPOSE OP BACKGROUND memset writes past prev frame and crashing or corrupting heap memory in transcoding applications.
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