FFmpeg RCE and DoS Vulnerability Advisory (USN-8671-1, CVE-2026-66036/39)

Vulnerability Overview Vulnerability ID: USN-8671-1 Publication Date: August 24, 2026 Description: FFmpeg contains an error when processing certain media files, which an attacker could exploit to cause a denial of service or execute arbitrary code. This specifically involves the following CVEs: - CVE-2026-66036 - CVE-2026-66039 Affected Systems Affected Software: FFmpeg Affected Versions: - 24.04 LTS (noble) - 22.04 LTS (jammy) - 20.04 LTS (focal) - 18.04 LTS (bionic) - 16.04 LTS (xenial) Remediation Update Details: Typically, standard system updates will complete all necessary changes. Specific Package Versions: - 24.04 LTS (noble): - - 7.6.1-3ubuntu5+esm11 - - 7.6.1-3ubuntu5+esm11 - - 7.6.1-3ubuntu5+esm11 - - 7.6.1-3ubuntu5+esm11 - - 7.6.1-3ubuntu5+esm11 - - 7.6.1-3ubuntu5+esm11 - - 7.6.1-3ubuntu5+esm11 - - 7.6.1-3ubuntu5+esm11 - - 7.6.1-3ubuntu5+esm11 - - 7.6.1-3ubuntu5+esm11 - - 7.6.1-3ubuntu5+esm11 - - 7.6.1-3ubuntu5+esm11 - - 7.6.1-3ubuntu5+esm11 - - 7.6.1-3ubuntu5+esm11 - - 7.6.1-3ubuntu5+esm11 - - 7.6.1-3ubuntu5+esm11 - - 7.6.1-3ubuntu5+esm11 - - 7.6.1-3ubuntu5+esm11 - - 7.6.1-3ubuntu5+esm11 - - 7.6.1-3ubuntu5+esm11 - - 7.6.1-3ubuntu5+esm11 - - 7.6.1-3ubuntu5+esm11 - - 7.6.1-3ubuntu5+esm11 - 22.04 LTS (jammy): - - 7.4.4-2ubuntu0.22.04.1+esm13 - - 7.4.4-2ubuntu0.22.04.1+esm13 - - 7.4.4-2ubuntu0.22.04.1+esm13 - - 7.4.4-2ubuntu0.22.04.1+esm13 - - 7.4.4-2ubuntu0.22.04.1+esm13 - - 7.4.4-2ubuntu0.22.04.1+esm13 - - 7.4.4-2ubuntu0.22.04.1+esm13 - - 7.4.4-2ubuntu0.22.04.1+esm13 - - 7.4.4-2ubuntu0.22.04.1+esm13 - - 7.4.4-2ubuntu0.22.04.1+esm13 - - 7.4.4-2ubuntu0.22.04.1+esm13 - - 7.4.4-2ubuntu0.22.04.1+esm13 - - 7.4.4-2ubuntu0.22.04.1+esm13 - - 7.4.4-2ubuntu0.22.04.1+esm13 - - 7.4.4-2ubuntu0.22.04.1+esm13 - - 7.4.4-2ubuntu0.22.04.1+esm13 - - 7.4.4-2ubuntu0.22.04.1+esm13 - - 7.4.4-2ubuntu0.22.04.1+esm13 - - 7.4.4-2ubuntu0.22.04.1+esm13 - - 7.4.4-2ubuntu0.22.04.1+esm13 - - 7.4.4-2ubuntu0.22.04.1+esm13 - - 7.4.4-2ubuntu0.22.04.1+esm13 - - 7.4.4-2ubuntu0.22.04.1+esm13 - 20.04 LTS (focal): - - 7.4.2-7ubuntu0.0.1+esm14 - - 7.4.2-7ubuntu0.1+esm14 - - 7.4.2-7ubuntu0.1+esm14 - - 7.4.2-7ubuntu0.1+esm14 - - 7.4.2-7ubuntu0.1+esm14 - - 7.4.2-7ubuntu0.1+esm14 - - 7.4.2-7ubuntu0.1+esm14 - - 7.4.2-7ubuntu0.1+esm14 - - 7.4.2-7ubuntu0.1+esm14 - - 7.4.2-7ubuntu0.1+esm14 - - 7.4.2-7ubuntu0.1+esm14 - - 7.4.2-7ubuntu0.1+esm14 - - 7.4.2-7ubuntu0.1+esm14 - - 7.4.2-7ubuntu0.1+esm14 - - 7.4.2-7ubuntu0.1+esm14 - - 7.4.2-7ubuntu0.1+esm14 - - 7.4.2-7ubuntu0.1+esm14 - - 7.4.2-7ubuntu0.1+esm14 - - 7.4.2-7ubuntu0.1+esm14 - - 7.4.2-7ubuntu0.1+esm14 - - 7.4.2-7ubuntu0.1+esm14 - - 7.4.2-7ubuntu0.1+esm14 - - 7.4.2-7ubuntu0.1+esm14 - 18.04 LTS (bionic): - - 7.3.4.11-0ubuntu0.1+esm13 - - 7.3.4.11-0ubuntu0.1+esm13 - - 7.3.4.11-0ubuntu0.1+esm13 - - 7.3.4.11-0ubuntu0.1+esm13 - - 7.3.4.11-0ubuntu0.1+esm13 - - 7.3.4.11-0ubuntu0.1+esm13 - - 7.3.4.11-0ubuntu0.1+esm13 - - 7.3.4.11-0ubuntu0.1+esm13 - - 7.3.4.11-0ubuntu0.1+esm13 - - 7.3.4.11-0ubuntu0.1+esm13 - - 7.3.4.11-0ubuntu0.1+esm13 - - 7.3.4.11-0ubuntu0.1+esm13 - - 7.3.4.11-0ubuntu0.1+esm13 - - 7.3.4.11-0ubuntu0.1+esm13 - - 7.3.4.11-0ubuntu0.1+esm13 - - 7.3.4.11-0ubuntu0.1+esm13 - - 7.3.4.11-0ubuntu0.1+esm13 - - 7.3.4.11-0ubuntu0.1+esm13 - - 7.3.4.11-0ubuntu0.1+esm13 - - 7.3.4.11-0ubuntu0.1+esm13 - - 7.3.4.11-0ubuntu0.1+esm13 - - 7.3.4.11-0ubuntu0.1+esm13 - - 7.3.4.11-0ubuntu0.1+esm13 - 16.04 LTS (xenial): - - 7.2.8.17-0ubuntu0.1+esm15 - - 7.2.8.17-0ubuntu0.1+esm15 - - 7.2.8.17-0ubuntu0.1+esm15 - - 7.2.8.17-0ubuntu0.1+esm15 - - 7.2.8.17-0ubuntu0.1+esm15 - - 7.2.8.17-0ubuntu0.1+esm15 - - 7.2.8.17-0ubuntu0.1+esm15 - - 7.2.8.17-0ubuntu0.1+esm15 - - 7.2.8.17-0ubuntu0.1+esm15 - - 7.2.8.17-0ubuntu0.1+esm15 - - 7.2.8.17-0ubuntu0.1+esm15 - - 7.2.8.17-0ubuntu0.1+esm15 - - 7.2.8.17-0ubuntu0.1+esm15 - - 7.2.8.17-0ubuntu0.1+esm15 - - 7.2.8.17-0ubuntu0.1+esm15 - - 7.2.8.17-0ubuntu0.1+esm15 - - 7.2.8.17-0ubuntu0.1+esm15 - - 7.2.8.17-0ubuntu0.1+esm15 - - 7.2.8.17-0ubuntu0.1+esm15 - - 7.2.8.17-0ubuntu0.1+esm15 - - 7.2.8.17-0ubuntu0.1+esm15 - - 7.2.8.17-0ubuntu0.1+esm15 References CVE-2026-66039 CVE-2026-66038 CVE-2026-66036 Reduce Your Attack Surface Ubuntu Pro provides 10 years of security coverage for over 25,000 packages in the Main and Universe repositories, free for up to five machines. Get Ubuntu Pro Other Issues For any other questions, please contact the team member.

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FFmpeg RCE and DoS Vulnerability Advisory (USN-8671-1, CVE-2026-66036/39)