> CVE-2026-66039 [HIGH]

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PUBLISHED
2026-07-24 20:18
MODIFIED
2026-07-24 20:18
CVSS_SCORE V3
8.7
EPSS (Prob. Exploit)
0.31%
Top 76.5%
DATA SOURCES:
NVD 🔗 2026-07-24 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-11-01 OSV 🔗 2026-11-02

> DESCRIPTION

FFmpeg through 8.1.2, fixed in commit aafb5c6, contains a signed integer overflow vulnerability in the MACE6 audio decoder that allows attackers to corrupt heap memory by supplying a crafted CAF file with a malicious bytes_per_packet value. Attackers can craft a CAF file with oversized bytes_per_packet and frames_per_packet values in the desc chunk to trigger an integer overflow in mace_decode_frame() during output sample count computation, resulting in an undersized buffer allocation and heap out-of-bounds write that could enable code execution.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR
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/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:X

> MÉTRIQUES CVSS DÉTAILLÉES

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/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:X
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
None (N)
Aucune authentification requise
UI (Interaction Utilisateur)
User Interaction
Unknown (P)
Interaction inconnue
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
High (H)
Divulgation totale d'informations
I (Impact Intégrité)
Integrity Impact
High (H)
Modification totale des données possible
A (Impact Disponibilité)
Availability Impact
High (H)
Interruption totale du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
High
Divulgation totale d'informations
Intégrité
High
Modification totale des données possible
Disponibilité
High
Interruption totale du service possible

> WEAKNESSES

CWE-122 CWE-190

> CWE DETAILED DESCRIPTIONS

CWE-122: Heap-based Buffer Overflow - The product writes past the end of a buffer that was allocated on the heap. | CWE-190: Integer Overflow or Wraparound - The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

> RED HAT SECURITY ADVISORIES

Red Hat Security Advisory: RHEL AI 3.3 RPM runtime CVE fix - ffmpeg
AIPCC Security Alerts identified CVEs in the 3.3 release of base-images. The CVE(s) are listed with a severity level of "Important" or higher.
Red Hat Security Advisory: RHEL AI 3.4 RPM runtime CVE fix - ffmpeg
AIPCC Security Alerts identified CVEs in the 3.4 release of base-images. The CVE(s) are listed with a severity level of "Important" or higher.
Red Hat Security Advisory: RHEL AI 3.5 RPM runtime CVE fix - ffmpeg
AIPCC Security Alerts identified CVEs in the 3.5 release of base-images. The CVE(s) are listed with a severity level of "Important" or higher.
Red Hat Security Advisory: RHOAI 2.25.11 - Red Hat OpenShift AI
Updated images are now available for Red Hat OpenShift AI.
Red Hat Security Advisory: RHEL AI 3.6 RPM runtime CVE fix - ffmpeg
AIPCC Security Alerts identified CVEs in the 3.6 release of base-images. The CVE(s) are listed with a severity level of "Important" or higher.
Red Hat Security Advisory: RHEL AI 3.0 RPM runtime CVE fix - ffmpeg
AIPCC Security Alerts identified CVEs in the 3.0 release of base-images. The CVE(s) are listed with a severity level of "Important" or higher.
Red Hat Security Advisory: Red Hat AI Base Images 3.5.2 (Gaudi)
Red Hat AI Base Images 3.5.2 (Gaudi) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.5.2 (Spyre)
Red Hat AI Base Images 3.5.2 (Spyre) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.5.2 (ROCm 7.14)
Red Hat AI Base Images 3.5.2 (ROCm 7.14) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.5.2 (TPU)
Red Hat AI Base Images 3.5.2 (TPU) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.5.2 (CUDA 13.0)
Red Hat AI Base Images 3.5.2 (CUDA 13.0) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.5.2 (Rubin)
Red Hat AI Base Images 3.5.2 (Rubin) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.5.2 (Neuron)
Red Hat AI Base Images 3.5.2 (Neuron) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.5.2 (CPU)
Red Hat AI Base Images 3.5.2 (CPU) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.5.2 (CUDA)
Red Hat AI Base Images 3.5.2 (CUDA) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.5.3 (CUDA 12.9)
Red Hat AI Base Images 3.5.3 (CUDA 12.9) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.5.3 (CPU)
Red Hat AI Base Images 3.5.3 (CPU) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.2.4 (CPU)
Red Hat AI Base Images 3.2.4 (CPU) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.5.3 (Spyre)
Red Hat AI Base Images 3.5.3 (Spyre) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.5.3 (CUDA 13.0)
Red Hat AI Base Images 3.5.3 (CUDA 13.0) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.2.4 (Spyre)
Red Hat AI Base Images 3.2.4 (Spyre) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.2.4 (ROCm 7.0)
Red Hat AI Base Images 3.2.4 (ROCm 7.0) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.2.4 (CUDA 12.9)
Red Hat AI Base Images 3.2.4 (CUDA 12.9) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.2.4 (ROCm 6.4)
Red Hat AI Base Images 3.2.4 (ROCm 6.4) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.2.4 (TPU)
Red Hat AI Base Images 3.2.4 (TPU) is now available.
Red Hat Security Advisory: Red Hat AI Inference Model Optimization Tools 3.5.2 (CUDA)
Red Hat AI Inference Model Optimization Tools 3.5.2 (CUDA) is now available.
Red Hat Security Advisory: Red Hat AI Inference Tech Preview 3.5.2 (Gaudi)
Red Hat AI Inference Tech Preview 3.5.2 (Gaudi) is now available.
Red Hat Security Advisory: Red Hat AI Inference 3.5.2 (ROCm)
Red Hat AI Inference 3.5.2 (ROCm) is now available.
Red Hat Security Advisory: Red Hat AI Inference 3.5.2 (cpu)
Red Hat AI Inference 3.5.2 (cpu) is now available.
Red Hat Security Advisory: Red Hat AI Inference 3.5.2 (spyre)
Red Hat AI Inference 3.5.2 (spyre) is now available.
Red Hat Security Advisory: Red Hat AI Inference 3.5.2 (cuda)
Red Hat AI Inference 3.5.2 (cuda) is now available.
Red Hat Security Advisory: Red Hat AI Base Images 3.2.5 (CUDA 12.9)
Red Hat AI Base Images 3.2.5 (CUDA 12.9) is now available.
Red Hat Security Advisory: Red Hat Enterprise Linux AI 3.5.2 enhancement update
Updated Red Hat Enterprise Linux AI 3.5.2 container images are now available.
Red Hat Security Advisory: Red Hat Enterprise Linux AI 3.5.2 enhancement update
Updated Red Hat Enterprise Linux AI 3.5.2 container disk images are now available.

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

FFmpeg MACE6 Audio Decoder Heap Out-of-Bounds Write via CAF File

AFFECTED PACKAGES:
Unknown / Unknown
37 versions affected
Unknown / Unknown
37 versions affected

> HISTORIQUE DES MODIFICATIONS

Première apparition
24/07/2026 20:18
Source: NVD
📊 ENRICHISSEMENT 01/11/2026 06:59
CWE
Champ modifié: Description CWE
Ancienne valeur:
CWE-122: Heap-based Buffer Overflow - A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the bu...
Nouvelle valeur:
CWE-122: Heap-based Buffer Overflow - The product writes past the end of a buffer that was allocated on the heap. | CWE-190: Integer Overflow or Wraparound - The product performs a calculation that ca...
📊 ENRICHISSEMENT 01/08/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-122: Heap-based Buffer Overflow - A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the bu...
Total des modifications: 2 Dernière mise à jour: 4 days ago

> REFERENCES

https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/aafb5c655edc76a753275c383ebb139feb0...
https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23631
https://www.vulncheck.com/advisories/ffmpeg-mace6-audio-decoder-heap-out-of-boun...
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