CVE-2026-64835

criticalpriority · track · 0EPSS 0.005 · 42 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.50% (42nd) EPSS

CVSS 9.8 · critical

Is it mine?

28 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

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 AV_PKT_DATA_NEW_EXTRADATA side data is received mid-stream, the adx_decode_frame 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.

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 6.3–9.8

v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · disclosure@vulncheck.comexploitability 2.8 · impact 5.9

v4.08.7highCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:Nsecondary · ENISA EU

v4.08.7highCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · disclosure@vulncheck.com

v4.06.3mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USCWE-787US

affected products (28)

Products and version ranges known to be affected.

Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
SUSE openSUSEall versionscert_bundDEcpe:/o:suse:opensuse:-
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-
Open Source ffmpeg≤ 8.1.2cert_bundDE
Open Source ffmpeg≥ 0.6.3cert_bundDE
Open Source ffmpeg≥ 0.7.1cert_bundDE
Open Source ffmpeg≥ 8.0cert_bundDE
FFMPEG FFmpeg≤ 4.4 ≤8.1.2enisa_euvdEU
FFMPEG FFmpeg≤ 1836ef968469…enisa_euvdEU
Canonical Ltd. Ubuntu≤ 22.04 LTSfstec_bduRU
Canonical Ltd. Ubuntu≤ 26.04 LTSfstec_bduRU
Canonical Ltd. Ubuntu≤ 24.04 LTSfstec_bduRU
FFmpeg team FFmpeg4.4 → 8.1.2fstec_bduRU
Red Hat, Inc. Red Hat AI Inference Server≤ 3.2fstec_bduRU
Red Hat, Inc. Red Hat AI Inference Server≤ 3.3fstec_bduRU
Red Hat, Inc. Red Hat Enterprise Linux AI≤ 3.2 for RHEL 9fstec_bduRU
Red Hat, Inc. Red Hat Enterprise Linux AI≤ 3.3 for RHEL 9fstec_bduRU
Red Hat, Inc. Red Hat Enterprise Linux AI≤ 3.0 for RHEL 9fstec_bduRU
Red Hat, Inc. Red Hat OpenShift AI≤ 3.4fstec_bduRU

showing 20 of 28

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-2491ffmpeg: Mehrere SchwachstellenDeutsch2026-07-22csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in ffmpeg ausnutzen, um beliebigen Code auszuführen, Daten zu manipulieren, vertrauliche Informationen offenzulegen oder einen Denial-of-Service-Zustand herbeizuführen.

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund NVD CVE.org MITRE

published 2026-07-22modified 2026-10-24

references (10)

External citations — patches, advisories, analysis.

scry

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