CVE-2026-64831

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Source
https://cve.org/CVERecord?id=CVE-2026-64831
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64831.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-64831
Downstream
Published
2026-07-22T16:35:43.775Z
Modified
2026-08-02T03:47:32.374770801Z
Severity
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
FFmpeg 8.0 - 8.1.2 Stack Buffer Overflow in Vulkan HEVC Decoder
Details

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 vpsnumhrdparameters value exceeding HEVCMAXSUBLAYERS in any supported container format to overflow stack-allocated arrays in the vkhevcend_frame function, potentially achieving arbitrary code execution.

Database specific 
{
    "cwe_ids": [
        "CWE-121"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64831.json",
    "cna_assigner": "VulnCheck",
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "introduced": "8.0"
                },
                {
                    "last_affected": "8.1.2"
                },
                {
                    "introduced": "92737390dc133daadce47dd7d2ec8ef3d9ebcbed"
                },
                {
                    "last_affected": "92737390dc133daadce47dd7d2ec8ef3d9ebcbed"
                }
            ]
        },
        {
            "source": "CPE_FIELD",
            "extracted_events": [
                {
                    "introduced": "8.0"
                },
                {
                    "last_affected": "8.1.2"
                }
            ]
        },
        {
            "source": "DESCRIPTION",
            "extracted_events": [
                {
                    "introduced": "8.0"
                },
                {
                    "fixed": "8.1.2"
                }
            ]
        }
    ]
}
References

Affected packages

Git / git.ffmpeg.org/ffmpeg.git

Affected ranges

Type
GIT
Repo
https://git.ffmpeg.org/ffmpeg.git
Events
Introduced
140fd653aed8cad774f991ba083e2d01e86420c7
Last affected
38b88335f99e76ed89ff3c93f877fdefce736c13
Database specific 
{
    "cpe": "cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*",
    "source": "CPE_RANGE",
    "extracted_events": [
        {
            "introduced": "8.0"
        },
        {
            "last_affected": "8.1.2"
        }
    ]
}

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64831.json"

Git / github.com/ffmpeg/ffmpeg

Affected ranges

Type
GIT
Repo
https://github.com/ffmpeg/ffmpeg
Events
Introduced
140fd653aed8cad774f991ba083e2d01e86420c7
Last affected
38b88335f99e76ed89ff3c93f877fdefce736c13
Database specific 
{
    "cpe": "cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*",
    "source": "CPE_RANGE",
    "extracted_events": [
        {
            "introduced": "8.0"
        },
        {
            "last_affected": "8.1.2"
        }
    ]
}

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64831.json"