High 8.8Published Jul 22, 2026

CVE-2026-64831FFmpeg 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 fram…

Updated under an hour ago (2026-10-19 09:50 UTC)

Does this affect you?

It affects ffmpeg. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for ffmpeg

Exploited in the last 30 days

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.

CVSS: 8.8 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-121
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Analyzed
Record last updated: Jul 28, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

ffmpeg ffmpeg ffmpeg:ffmpeg	from 8.0 through 8.1.2	NVD

References

https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/92737390dc133daadce47dd7d2ec8ef3d9ebcbedpatch
https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23665issue-tracking, patch
https://www.vulncheck.com/advisories/ffmpeg-stack-buffer-overflow-in-vulkan-hevc-decoderthird-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.