The vulnerability of the MACE6 decoder for audio formats in the FFmpeg multimedia library allows a perpetrator to damage memory, cause system failures, or execute arbitrary code.
🗓️ 25 Sep 2026 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec🔗 bdu.fstec.ru👁 3 Views
| Reporter | Title | Published | Views | Family All 112 |
|---|---|---|---|---|
 | CVE-2026-66039 | 24 Jul 202619:42 | – | attackerkb |
 | CVE-2026-66039 | 24 Jul 202619:42 | – | alpinelinux |
 | CVE-2026-66039 vulnerabilities | 21 Sep 202608:54 | – | cgr |
 | CVE-2026-66039 | 24 Jul 202622:01 | – | circl |
 | CVE-2026-66039 | 24 Jul 202619:42 | – | cve |
 | CVE-2026-66039 FFmpeg MACE6 Audio Decoder Heap Out-of-Bounds Write via CAF File | 24 Jul 202619:42 | – | cvelist |
 | CVE-2026-66039 | 24 Jul 202619:42 | – | debiancve |
 | EUVD-2026-48741 | 24 Jul 202619:42 | – | euvd |
 | Updated ffmpeg package fixes security vulnerabilities | 13 Sep 202605:39 | – | mageia |
 | CVE-2026-66039 | 24 Jul 202620:18 | – | nvd |
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25 Sep 2026 00:00Current
7.4High risk
Vulners AI Score7.4
CVSS 39.8
CVSS 210
EPSS0.0044