CVE-2026-96611Medium· 6.9▾ SunlitFFmpeg before 9.0 has a signed integer overflow in libavformat/mov.c. In mov_read_ispe(), uint32_t width/height values from a crafted HEIF ispe box are stored into signed int fields without bounds checking, allowing values exceeding INT_…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 38 · 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.
Exploit-prediction probability, daily snapshots since Sep 24.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.1%
Last analysed / modified upstream
FFmpeg before 9.0 has a signed integer overflow in libavformat/mov.c. In mov_read_ispe(), uint32_t width/height values from a crafted HEIF ispe box are stored into signed int fields without bounds checking, allowing values exceeding INT_MAX to become negative. In read_image_grid(), accumulating these values causes signed integer overflow (undefined behavior per C17 section 6.5), which on x86 wraps to a small positive value, bypassing downstream validity checks.
ffmpeg < 9.0Upgrade past the affected range:
ffmpeg 9.0Connected by shared product, vendor, weakness, or advisory.
CVE-2026-30754High· 8.8A memory corruption vulnerability exists in FFmpeg before 8.1
CVE-2026-107676Low· 3.3FFmpeg through 9.0.2 contains an uninitialized memory disclosure vulnerability in av_dynamic_hdr_plus_to_t35() that leaves up to three payload bytes uninitialized when tone_mapping_flag is 0
CVE-2026-90815Medium· 6.3A vulnerability has been found in FFmpeg up to 4.4.6/5.1.8/6.1.4/7.1.3/8.0.1
CVE-2026-90816Medium· 4.3A vulnerability was found in FFmpeg 8.0.x
CVE-2026-52296Low· 2.9FFmpeg before 9.0 has an out-of-bounds read because of missing required padding in WMA extradata allocation paths in libavcodec/wmaenc.c.
CVE-2026-52297Low· 2.9FFmpeg before 9.0 has an out-of-bounds read because there is insufficiently padded extradata in the MOV parsing path in mov_read_iacb in libavformat/mov.c.