PT-2026-140994
CVE-2026-125101
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Published
2026-11-09
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Updated
2026-11-09
Description by
CVSS 3.1
3.3
LowMetricsAV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
FFmpeg through 9.0.2 contains an information disclosure vulnerability in the VMnc decoder in libavcodec/vmnc.c that restores an unwritten cursor save area into later frames. Attackers can supply a crafted VMnc stream where a frame fails after loading a cursor shape, causing uninitialized heap bytes from screendta to appear in decoded output.
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