CVE-2026-75143Critical· 9.8▾ MidnightFFmpeg before commit 1c10bcc contains a heap buffer overflow in the RIST protocol reader (libavformat/librist.c). librist_read() ignored its size argument and copied the full received payload length into the caller-provided destination b…
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 53.9 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Oct 27.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.7%
FFmpeg before commit 1c10bcc contains a heap buffer overflow in the RIST protocol reader (libavformat/librist.c). librist_read() ignored its size argument and copied the full received payload length into the caller-provided destination buffer, overflowing it when the payload exceeds the destination size. This is reachable via the async:rist:// URL scheme, where the async wrapper supplies a smaller buffer than the received payload. A remote RIST sender can trigger the overflow by sending a packet whose payload exceeds the caller buffer size.
FFmpeg < 1c10bcc2e17255dacb717a25ab3db142ce390602Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-75144High· 7.8FFmpeg Heap Buffer Overflow in VC-2/Dirac RTP Packetizer
CVE-2026-75141High· 7.8FFmpeg Heap Buffer Overflow in hvcC Box Writer via HEVC Muxing
CVE-2026-75147High· 7.1FFmpeg Out-of-Bounds Read in AV1 RTP Packetizer via rtpenc_av1.c
CVE-2026-75145Medium· 5.8FFmpeg Integer Narrowing Conversion OOB Memory Access in AV1 RTP Packetizer
CVE-2026-75146High· 8.1FFmpeg Out-of-Bounds Read in DASH Demuxer via dashdec.c
CVE-2026-107695Medium· 6.5FFmpeg before 8.1.3 contains an infinite loop vulnerability in the HLS demuxer that allows remote attackers to cause denial of service because parse_playlist() accepts Master Playlist tags inside Media Playlists