CVE-2026-75141High· 7.8▾ TwilightFFmpeg before commit acf5d7c contains a heap buffer overflow in the hvcC box writer. When writing an HEVC configuration record with more NAL units of a single type than the count field can represent, the NAL unit count overflows, causing…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.9 · likelihood 0 · 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
0.2%
FFmpeg before commit acf5d7c contains a heap buffer overflow in the hvcC box writer. When writing an HEVC configuration record with more NAL units of a single type than the count field can represent, the NAL unit count overflows, causing a heap buffer overflow. A crafted HEVC input file triggers the overflow during muxing.
FFmpeg < acf5d7cdc1f9ae8752c23e1ea8d7f355ed780781Refer 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-2026-75143Critical· 9.8FFmpeg Heap Buffer Overflow via RIST Protocol Reader
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