CVE-2026-66039
ffmpeg: FFmpeg through 8.1.2, fixed in commit aafb5c6, contains a signed integer overflow vulnerability in the MACE6 audio de...
CVE-2026-66039 is fixed in 50 products on 1 platform, first by ffmpeg 7:3.4.11-0ubuntu0.1+esm13, released July 24, 2026. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
7.8
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0031
23rd percentile
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| ffmpeg · Debian 14 | 7:9.0.2-1 | DEBIAN-CVE-2026-66039 | Jul 24, 2026 |
| ffmpeg · Ubuntu 18.04.6 LTS (bionic) | 7:3.4.11-0ubuntu0.1+esm13 | ffmpeg 7:3.4.11-0ubuntu0.1+esm13 | Jul 24, 2026 |
| ffmpeg · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm14 | ffmpeg 7:4.2.7-0ubuntu0.1+esm14 | Jul 24, 2026 |
| ffmpeg · Ubuntu 22.04.1 LTS (jammy) | 7:4.4.2-0ubuntu0.22.04.1+esm13 | ffmpeg 7:4.4.2-0ubuntu0.22.04.1+esm13 | Jul 24, 2026 |
| ffmpeg · Ubuntu 24.04.5 LTS (noble) | 7:6.1.1-3ubuntu5+esm11 | ffmpeg 7:6.1.1-3ubuntu5+esm11 | Jul 24, 2026 |
| ffmpeg · Ubuntu 26.04.1 LTS (resolute) | 7:8.0.1-3ubuntu2+esm3 | ffmpeg 7:8.0.1-3ubuntu2+esm3 | Aug 6, 2026 |
| ffmpeg · sles 15.6 | 3.4.2-150200.11.73.1 | SUSE-SU-2026:3552-1 | Aug 10, 2026 |
| ffmpeg · sles 15.7 | 3.4.2-150200.11.73.1 | SUSE-SU-2026:3552-1 | Aug 10, 2026 |
| ffmpeg-4 · opensuse-leap 16.0 | 4.4.7-bp160.3.1 | OPENSUSE-SU-2026:21522-1 | Aug 3, 2026 |
| ffmpeg-4 · sles 15.7 | 4.4.8-150600.13.52.1 | SUSE-SU-2026:3542-1 | Aug 10, 2026 |
| ffmpeg-7 · opensuse-leap 16.0 | 7.1.4-160000.3.1 | OPENSUSE-SU-2026:21572-1 | Aug 12, 2026 |
| ffmpeg-7 · sles 16.0 | 7.1.4-160000.3.1 | SUSE-SU-2026:23232-1 | Aug 12, 2026 |
| libavcodec-extra · Ubuntu 18.04.6 LTS (bionic) | 7:3.4.11-0ubuntu0.1+esm13 | libavcodec-extra 7:3.4.11-0ubuntu0.1+esm13 | Jul 24, 2026 |
| libavcodec-extra · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm14 | libavcodec-extra 7:4.2.7-0ubuntu0.1+esm14 | Jul 24, 2026 |
| libavcodec-extra · Ubuntu 22.04.1 LTS (jammy) | 7:4.4.2-0ubuntu0.22.04.1+esm13 | libavcodec-extra 7:4.4.2-0ubuntu0.22.04.1+esm13 | Jul 24, 2026 |
| libavcodec-extra · Ubuntu 24.04.5 LTS (noble) | 7:6.1.1-3ubuntu5+esm11 | libavcodec-extra 7:6.1.1-3ubuntu5+esm11 | Jul 24, 2026 |
| libavcodec-extra · Ubuntu 26.04.1 LTS (resolute) | 7:8.0.1-3ubuntu2+esm3 | libavcodec-extra 7:8.0.1-3ubuntu2+esm3 | Aug 6, 2026 |
| libavcodec-extra57 · Ubuntu 18.04.6 LTS (bionic) | 7:3.4.11-0ubuntu0.1+esm13 | libavcodec-extra57 7:3.4.11-0ubuntu0.1+esm13 | Jul 24, 2026 |
| libavcodec-extra58 · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm14 | libavcodec-extra58 7:4.2.7-0ubuntu0.1+esm14 | Jul 24, 2026 |
| libavcodec-extra58 · Ubuntu 22.04.1 LTS (jammy) | 7:4.4.2-0ubuntu0.22.04.1+esm13 | libavcodec-extra58 7:4.4.2-0ubuntu0.22.04.1+esm13 | Jul 24, 2026 |
| libavcodec-extra60 · Ubuntu 24.04.5 LTS (noble) | 7:6.1.1-3ubuntu5+esm11 | libavcodec-extra60 7:6.1.1-3ubuntu5+esm11 | Jul 24, 2026 |
| libavcodec-extra62 · Ubuntu 26.04.1 LTS (resolute) | 7:8.0.1-3ubuntu2+esm3 | libavcodec-extra62 7:8.0.1-3ubuntu2+esm3 | Aug 6, 2026 |
| libavcodec57 · Ubuntu 18.04.6 LTS (bionic) | 7:3.4.11-0ubuntu0.1+esm13 | libavcodec57 7:3.4.11-0ubuntu0.1+esm13 | Jul 24, 2026 |
| libavcodec58 · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm14 | libavcodec58 7:4.2.7-0ubuntu0.1+esm14 | Jul 24, 2026 |
| libavcodec58 · Ubuntu 22.04.1 LTS (jammy) | 7:4.4.2-0ubuntu0.22.04.1+esm13 | libavcodec58 7:4.4.2-0ubuntu0.22.04.1+esm13 | Jul 24, 2026 |
| libavcodec60 · Ubuntu 24.04.5 LTS (noble) | 7:6.1.1-3ubuntu5+esm11 | libavcodec60 7:6.1.1-3ubuntu5+esm11 | Jul 24, 2026 |
| libavcodec62 · Ubuntu 26.04.1 LTS (resolute) | 7:8.0.1-3ubuntu2+esm3 | libavcodec62 7:8.0.1-3ubuntu2+esm3 | Aug 6, 2026 |
| libavdevice57 · Ubuntu 18.04.6 LTS (bionic) | 7:3.4.11-0ubuntu0.1+esm13 | libavdevice57 7:3.4.11-0ubuntu0.1+esm13 | Jul 24, 2026 |
| libavdevice58 · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm14 | libavdevice58 7:4.2.7-0ubuntu0.1+esm14 | Jul 24, 2026 |
| libavdevice58 · Ubuntu 22.04.1 LTS (jammy) | 7:4.4.2-0ubuntu0.22.04.1+esm13 | libavdevice58 7:4.4.2-0ubuntu0.22.04.1+esm13 | Jul 24, 2026 |
| libavdevice60 · Ubuntu 24.04.5 LTS (noble) | 7:6.1.1-3ubuntu5+esm11 | libavdevice60 7:6.1.1-3ubuntu5+esm11 | Jul 24, 2026 |
| libavdevice62 · Ubuntu 26.04.1 LTS (resolute) | 7:8.0.1-3ubuntu2+esm3 | libavdevice62 7:8.0.1-3ubuntu2+esm3 | Aug 6, 2026 |
| libavfilter-extra · Ubuntu 18.04.6 LTS (bionic) | 7:3.4.11-0ubuntu0.1+esm13 | libavfilter-extra 7:3.4.11-0ubuntu0.1+esm13 | Jul 24, 2026 |
| libavfilter-extra · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm14 | libavfilter-extra 7:4.2.7-0ubuntu0.1+esm14 | Jul 24, 2026 |
| libavfilter-extra · Ubuntu 22.04.1 LTS (jammy) | 7:4.4.2-0ubuntu0.22.04.1+esm13 | libavfilter-extra 7:4.4.2-0ubuntu0.22.04.1+esm13 | Jul 24, 2026 |
| libavfilter-extra · Ubuntu 24.04.5 LTS (noble) | 7:6.1.1-3ubuntu5+esm11 | libavfilter-extra 7:6.1.1-3ubuntu5+esm11 | Jul 24, 2026 |
| libavfilter-extra · Ubuntu 26.04.1 LTS (resolute) | 7:8.0.1-3ubuntu2+esm3 | libavfilter-extra 7:8.0.1-3ubuntu2+esm3 | Aug 6, 2026 |
| libavfilter-extra11 · Ubuntu 26.04.1 LTS (resolute) | 7:8.0.1-3ubuntu2+esm3 | libavfilter-extra11 7:8.0.1-3ubuntu2+esm3 | Aug 6, 2026 |
| libavfilter-extra6 · Ubuntu 18.04.6 LTS (bionic) | 7:3.4.11-0ubuntu0.1+esm13 | libavfilter-extra6 7:3.4.11-0ubuntu0.1+esm13 | Jul 24, 2026 |
| libavfilter-extra7 · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm14 | libavfilter-extra7 7:4.2.7-0ubuntu0.1+esm14 | Jul 24, 2026 |
| libavfilter-extra7 · Ubuntu 22.04.1 LTS (jammy) | 7:4.4.2-0ubuntu0.22.04.1+esm13 | libavfilter-extra7 7:4.4.2-0ubuntu0.22.04.1+esm13 | Jul 24, 2026 |
| libavfilter-extra9 · Ubuntu 24.04.5 LTS (noble) | 7:6.1.1-3ubuntu5+esm11 | libavfilter-extra9 7:6.1.1-3ubuntu5+esm11 | Jul 24, 2026 |
| libavfilter11 · Ubuntu 26.04.1 LTS (resolute) | 7:8.0.1-3ubuntu2+esm3 | libavfilter11 7:8.0.1-3ubuntu2+esm3 | Aug 6, 2026 |
| libavfilter6 · Ubuntu 18.04.6 LTS (bionic) | 7:3.4.11-0ubuntu0.1+esm13 | libavfilter6 7:3.4.11-0ubuntu0.1+esm13 | Jul 24, 2026 |
| libavfilter7 · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm14 | libavfilter7 7:4.2.7-0ubuntu0.1+esm14 | Jul 24, 2026 |
| libavfilter7 · Ubuntu 22.04.1 LTS (jammy) | 7:4.4.2-0ubuntu0.22.04.1+esm13 | libavfilter7 7:4.4.2-0ubuntu0.22.04.1+esm13 | Jul 24, 2026 |
| libavfilter9 · Ubuntu 24.04.5 LTS (noble) | 7:6.1.1-3ubuntu5+esm11 | libavfilter9 7:6.1.1-3ubuntu5+esm11 | Jul 24, 2026 |
| libavformat-extra · Ubuntu 22.04.1 LTS (jammy) | 7:4.4.2-0ubuntu0.22.04.1+esm13 | libavformat-extra 7:4.4.2-0ubuntu0.22.04.1+esm13 | Jul 24, 2026 |
| libavformat-extra · Ubuntu 24.04.5 LTS (noble) | 7:6.1.1-3ubuntu5+esm11 | libavformat-extra 7:6.1.1-3ubuntu5+esm11 | Jul 24, 2026 |
| libavformat-extra · Ubuntu 26.04.1 LTS (resolute) | 7:8.0.1-3ubuntu2+esm3 | libavformat-extra 7:8.0.1-3ubuntu2+esm3 | Aug 6, 2026 |
| libavformat-extra58 · Ubuntu 22.04.1 LTS (jammy) | 7:4.4.2-0ubuntu0.22.04.1+esm13 | libavformat-extra58 7:4.4.2-0ubuntu0.22.04.1+esm13 | Jul 24, 2026 |
| libavformat-extra60 · Ubuntu 24.04.5 LTS (noble) | 7:6.1.1-3ubuntu5+esm11 | libavformat-extra60 7:6.1.1-3ubuntu5+esm11 | Jul 24, 2026 |
| libavformat-extra62 · Ubuntu 26.04.1 LTS (resolute) | 7:8.0.1-3ubuntu2+esm3 | libavformat-extra62 7:8.0.1-3ubuntu2+esm3 | Aug 6, 2026 |
| libavformat57 · Ubuntu 18.04.6 LTS (bionic) | 7:3.4.11-0ubuntu0.1+esm13 | libavformat57 7:3.4.11-0ubuntu0.1+esm13 | Jul 24, 2026 |
| libavformat58 · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm14 | libavformat58 7:4.2.7-0ubuntu0.1+esm14 | Jul 24, 2026 |
| libavformat58 · Ubuntu 22.04.1 LTS (jammy) | 7:4.4.2-0ubuntu0.22.04.1+esm13 | libavformat58 7:4.4.2-0ubuntu0.22.04.1+esm13 | Jul 24, 2026 |
| libavformat60 · Ubuntu 24.04.5 LTS (noble) | 7:6.1.1-3ubuntu5+esm11 | libavformat60 7:6.1.1-3ubuntu5+esm11 | Jul 24, 2026 |
| libavformat62 · Ubuntu 26.04.1 LTS (resolute) | 7:8.0.1-3ubuntu2+esm3 | libavformat62 7:8.0.1-3ubuntu2+esm3 | Aug 6, 2026 |
| libavresample3 · Ubuntu 18.04.6 LTS (bionic) | 7:3.4.11-0ubuntu0.1+esm13 | libavresample3 7:3.4.11-0ubuntu0.1+esm13 | Jul 24, 2026 |
| libavresample4 · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm14 | libavresample4 7:4.2.7-0ubuntu0.1+esm14 | Jul 24, 2026 |
| libavutil55 · Ubuntu 18.04.6 LTS (bionic) | 7:3.4.11-0ubuntu0.1+esm13 | libavutil55 7:3.4.11-0ubuntu0.1+esm13 | Jul 24, 2026 |
| libavutil56 · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm14 | libavutil56 7:4.2.7-0ubuntu0.1+esm14 | Jul 24, 2026 |
| libavutil56 · Ubuntu 22.04.1 LTS (jammy) | 7:4.4.2-0ubuntu0.22.04.1+esm13 | libavutil56 7:4.4.2-0ubuntu0.22.04.1+esm13 | Jul 24, 2026 |
| libavutil58 · Ubuntu 24.04.5 LTS (noble) | 7:6.1.1-3ubuntu5+esm11 | libavutil58 7:6.1.1-3ubuntu5+esm11 | Jul 24, 2026 |
| libavutil60 · Ubuntu 26.04.1 LTS (resolute) | 7:8.0.1-3ubuntu2+esm3 | libavutil60 7:8.0.1-3ubuntu2+esm3 | Aug 6, 2026 |
| libpostproc54 · Ubuntu 18.04.6 LTS (bionic) | 7:3.4.11-0ubuntu0.1+esm13 | libpostproc54 7:3.4.11-0ubuntu0.1+esm13 | Jul 24, 2026 |
| libpostproc55 · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm14 | libpostproc55 7:4.2.7-0ubuntu0.1+esm14 | Jul 24, 2026 |
| libpostproc55 · Ubuntu 22.04.1 LTS (jammy) | 7:4.4.2-0ubuntu0.22.04.1+esm13 | libpostproc55 7:4.4.2-0ubuntu0.22.04.1+esm13 | Jul 24, 2026 |
| libpostproc57 · Ubuntu 24.04.5 LTS (noble) | 7:6.1.1-3ubuntu5+esm11 | libpostproc57 7:6.1.1-3ubuntu5+esm11 | Jul 24, 2026 |
| libswresample2 · Ubuntu 18.04.6 LTS (bionic) | 7:3.4.11-0ubuntu0.1+esm13 | libswresample2 7:3.4.11-0ubuntu0.1+esm13 | Jul 24, 2026 |
| libswresample3 · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm14 | libswresample3 7:4.2.7-0ubuntu0.1+esm14 | Jul 24, 2026 |
| libswresample3 · Ubuntu 22.04.1 LTS (jammy) | 7:4.4.2-0ubuntu0.22.04.1+esm13 | libswresample3 7:4.4.2-0ubuntu0.22.04.1+esm13 | Jul 24, 2026 |
| libswresample4 · Ubuntu 24.04.5 LTS (noble) | 7:6.1.1-3ubuntu5+esm11 | libswresample4 7:6.1.1-3ubuntu5+esm11 | Jul 24, 2026 |
| libswresample6 · Ubuntu 26.04.1 LTS (resolute) | 7:8.0.1-3ubuntu2+esm3 | libswresample6 7:8.0.1-3ubuntu2+esm3 | Aug 6, 2026 |
| libswscale4 · Ubuntu 18.04.6 LTS (bionic) | 7:3.4.11-0ubuntu0.1+esm13 | libswscale4 7:3.4.11-0ubuntu0.1+esm13 | Jul 24, 2026 |
| libswscale5 · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1+esm14 | libswscale5 7:4.2.7-0ubuntu0.1+esm14 | Jul 24, 2026 |
| libswscale5 · Ubuntu 22.04.1 LTS (jammy) | 7:4.4.2-0ubuntu0.22.04.1+esm13 | libswscale5 7:4.4.2-0ubuntu0.22.04.1+esm13 | Jul 24, 2026 |
| libswscale7 · Ubuntu 24.04.5 LTS (noble) | 7:6.1.1-3ubuntu5+esm11 | libswscale7 7:6.1.1-3ubuntu5+esm11 | Jul 24, 2026 |
| libswscale9 · Ubuntu 26.04.1 LTS (resolute) | 7:8.0.1-3ubuntu2+esm3 | libswscale9 7:8.0.1-3ubuntu2+esm3 | Aug 6, 2026 |
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