CVE•Published 2026-07-22•Modified 2026-07-28•1 article on news•4 live references•NVD data

CVE-2026-64831Ffmpeg · Ffmpeg

Vulnerability data via NVD (ingested)

CVSS v3.1

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS percentile

Exploit Prediction Scoring System · top 61% of all CVEs

Weaknesses (CWE)

CWE-121Stack-based Buffer Overflow

Description

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.

Timeline

Published 2026-07-22

Modified 2026-07-28

External references

NVD MITRE Exploit-DB VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common). Live host counts are a Premium feature.

Shodan · vuln tag

vuln:CVE-2026-64831

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Ffmpeg Ffmpeg"

All exposed Ffmpeg Ffmpeg instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Ffmpeg"

HTTP body or banner mentions "Ffmpeg" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-64831