CVE-2026-64831
HIGHFFmpeg 8.0 - 8.1.2 Stack Buffer Overflow in Vulkan HEVC Decoder
Title source: cnaDescription
FFmpeg versions 8.0 through 8.1.2 contains a stack buffer overflow vulnerability in the Vulkan HEVC hardware decoder that allows remote attackers to overwrite return addresses and adjacent stack frames by supplying a crafted HEVC/H.265 bitstream. Attackers can embed a malicious vps_num_hrd_parameters value exceeding HEVC_MAX_SUB_LAYERS in any supported container format to overflow stack-allocated arrays in the vk_hevc_end_frame function, potentially achieving arbitrary code execution.
References (3)
Core 3
Core References
Patch patch
Patch Commit
https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/92737390dc133daadce47dd7d2ec8ef3d9ebcbed
Third Party Advisory third-party-advisory
https://www.vulncheck.com/advisories/ffmpeg-stack-buffer-overflow-in-vulkan-hevc-decoder
Scores
CVSS v3
8.8
EPSS
0.0048
EPSS Percentile
38.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-121
Status
published
Products (2)
FFmpeg/FFmpeg
8.0 - 8.1.2
FFmpeg/FFmpeg
92737390dc133daadce47dd7d2ec8ef3d9ebcbed
Published
Jul 22, 2026
Tracked Since
Jul 22, 2026