CVE-2026-64835

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Source
https://cve.org/CVERecord?id=CVE-2026-64835
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64835.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-64835
Downstream
Related
Published
2026-07-22T17:24:05.477Z
Modified
2026-08-17T03:54:57.744213122Z
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 4.4 - 8.1.2 Out-of-Bounds Memory Access in ADX Audio Decoder
Details

FFmpeg versions 4.4 through 8.1.2 contain an out-of-bounds memory access vulnerability in the ADX audio decoder within libavcodec/adxdec.c that allows attackers to trigger both out-of-bounds reads and writes by supplying a crafted ADX or AAX audio file with a mid-stream channel layout change. When AVPKTDATANEWEXTRADATA side data is received mid-stream, the adxdecodeframe function re-parses the stream header but fails to update the internal channel state, causing subsequent decoding operations to access the prev[] state array using a stale channel count.

Database specific 
{
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "4.4"
                },
                {
                    "last_affected": "8.1.2"
                },
                {
                    "introduced": "1836ef96846937a6cc2443698a693104f5c0b21e"
                },
                {
                    "last_affected": "1836ef96846937a6cc2443698a693104f5c0b21e"
                }
            ],
            "source": "AFFECTED_FIELD"
        },
        {
            "extracted_events": [
                {
                    "introduced": "4.4"
                },
                {
                    "last_affected": "8.1.2"
                }
            ],
            "source": "CPE_FIELD"
        },
        {
            "extracted_events": [
                {
                    "introduced": "4.4"
                },
                {
                    "fixed": "8.1.2"
                }
            ],
            "source": "DESCRIPTION"
        }
    ],
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-787"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64835.json"
}
References

Affected packages

Git / git.ffmpeg.org/ffmpeg.git

Affected ranges

Type
GIT
Repo
https://git.ffmpeg.org/ffmpeg.git
Events
Introduced
c5079bf3bccd24bf8ed45ff47ff4071fd09e9fd8
Last affected
38b88335f99e76ed89ff3c93f877fdefce736c13
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "4.4"
        },
        {
            "last_affected": "8.1.2"
        }
    ],
    "source": "CPE_RANGE",
    "cpe": "cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*"
}

Affected versions

n4.*
n4.4-dev
n4.5-dev
n5.*
n5.1-dev
n5.2-dev
n6.*
n6.1-dev
n6.2-dev
n7.*
n7.1-dev
n7.2-dev
n8.*
n8.1
n8.1-dev
n8.1.1
n8.1.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64835.json"

Git / github.com/ffmpeg/ffmpeg

Affected ranges

Type
GIT
Repo
https://github.com/ffmpeg/ffmpeg
Events
Introduced
c5079bf3bccd24bf8ed45ff47ff4071fd09e9fd8
Last affected
38b88335f99e76ed89ff3c93f877fdefce736c13
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "4.4"
        },
        {
            "last_affected": "8.1.2"
        }
    ],
    "source": "CPE_RANGE",
    "cpe": "cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*"
}

Affected versions

n4.*
n4.4-dev
n4.5-dev
n5.*
n5.1-dev
n5.2-dev
n6.*
n6.1-dev
n6.2-dev
n7.*
n7.1-dev
n7.2-dev
n8.*
n8.1
n8.1-dev
n8.1.1
n8.1.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64835.json"