CVE-2026-125181: fallo de gravedad alta en FFmpeg
FFmpeg through 9.0.2 FLIC Decoder Out-of-Bounds Write via FLI_BRUN Byte Swap
Publicada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
18Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 7.3
FFmpeg through 9.0.2 contains an out-of-bounds write vulnerability in flic_decode_frame_15_16BPP() in libavcodec/flicvideo.c that allows attackers to corrupt heap memory on big-endian builds. Attackers can supply a crafted 15/16 bpp FLIC/FLX file with an FLI_BRUN chunk whose non-terminating byte-swap loop writes packet-derived data past the frame buffer, crashing the process.
CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Productos afectados
FFmpeg · FFmpegCVEs relacionadas — FFmpeg
En el mismo producto, de las más peligrosas a las menos.
CVE-2026-8461HIGHHeap out-of-bounds write via odd slice_height in FFmpeg MagicYUV decoderEPSS 1.6%CVE-2026-64831HIGHFFmpeg 8.0 - 8.1.2 Stack Buffer Overflow in Vulkan HEVC DecoderEPSS 0.9%CVE-2026-66040HIGHFFmpeg Heap Out-of-Bounds Write via PNG/APNG eXIf EncoderEPSS 0.8%CVE-2026-64834HIGHFFmpeg 0.6.3 - 8.1.2 Infinite Loop DoS via RTP/ASF DemuxerEPSS 0.7%CVE-2026-75143CRITICALFFmpeg Heap Buffer Overflow via RIST Protocol ReaderEPSS 0.7%CVE-2026-64830HIGHFFmpeg 2.1 - 8.1.2 Heap Buffer Overflow via VobSub Subtitle DemuxerEPSS 0.6%
Referencias
https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24901https://github.com/FFmpeg/FFmpeghttps://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/flicvideo.c#L883https://github.com/FFmpeg/FFmpeg/commit/c0d308a9a616f4abcc4e0a4d86f7de92ecdef9f6https://github.com/FFmpeg/FFmpeg/commit/eb47d7bb6cf13042c6ab14e22fc0c0c3a6e51e12https://github.com/FFmpeg/FFmpeg/commit/ee30fb98c0d4e97abbd5e371d2a3a926e92bec70https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-flic-decoder-out-of-bounds-write-via-fli-brun-byte-swap