Detections
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Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS : FFmpeg vulnerabilities (USN-8671-1)

high Nessus Plugin ID 365453

Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8671-1 advisory.

 Adrian Junge was discovered that FFmpeg incorrectly handled certain media files. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-66036, CVE-2026-66039)

 Adrian Junge discovered that FFmpeg incorrectly handled certain media files. An attacker could possibly use this issue to obtain sensitive information. (CVE-2026-66038)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-8671-1

Plugin Details

Severity: High

ID: 365453

File Name: ubuntu_USN-8671-1.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 10/13/2026

Updated: 10/13/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.9

Percentile: 96.51

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-66036

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: High

Base Score: 8.7

Threat Score: 6.3

Threat Vector: CVSS:4.0/E:U

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

CVSS Score Source: CVE-2026-66039

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:ffmpeg, p-cpe:/a:canonical:ubuntu_linux:libavcodec-extra57, p-cpe:/a:canonical:ubuntu_linux:libavcodec-extra58, p-cpe:/a:canonical:ubuntu_linux:libavcodec-extra60, p-cpe:/a:canonical:ubuntu_linux:libavcodec-extra, p-cpe:/a:canonical:ubuntu_linux:libavcodec57, p-cpe:/a:canonical:ubuntu_linux:libavcodec58, p-cpe:/a:canonical:ubuntu_linux:libavcodec60, p-cpe:/a:canonical:ubuntu_linux:libavdevice57, p-cpe:/a:canonical:ubuntu_linux:libavdevice58, p-cpe:/a:canonical:ubuntu_linux:libavdevice60, p-cpe:/a:canonical:ubuntu_linux:libavfilter-extra6, p-cpe:/a:canonical:ubuntu_linux:libavfilter-extra7, p-cpe:/a:canonical:ubuntu_linux:libavfilter-extra9, p-cpe:/a:canonical:ubuntu_linux:libavfilter-extra, p-cpe:/a:canonical:ubuntu_linux:libavfilter6, p-cpe:/a:canonical:ubuntu_linux:libavfilter7, p-cpe:/a:canonical:ubuntu_linux:libavfilter9, p-cpe:/a:canonical:ubuntu_linux:libavformat-extra58, p-cpe:/a:canonical:ubuntu_linux:libavformat-extra60, p-cpe:/a:canonical:ubuntu_linux:libavformat-extra, p-cpe:/a:canonical:ubuntu_linux:libavformat57, p-cpe:/a:canonical:ubuntu_linux:libavformat58, p-cpe:/a:canonical:ubuntu_linux:libavformat60, p-cpe:/a:canonical:ubuntu_linux:libavresample3, p-cpe:/a:canonical:ubuntu_linux:libavresample4, p-cpe:/a:canonical:ubuntu_linux:libavutil55, p-cpe:/a:canonical:ubuntu_linux:libavutil56, p-cpe:/a:canonical:ubuntu_linux:libavutil58, p-cpe:/a:canonical:ubuntu_linux:libpostproc54, p-cpe:/a:canonical:ubuntu_linux:libpostproc55, p-cpe:/a:canonical:ubuntu_linux:libpostproc57, p-cpe:/a:canonical:ubuntu_linux:libswresample2, p-cpe:/a:canonical:ubuntu_linux:libswresample3, p-cpe:/a:canonical:ubuntu_linux:libswresample4, p-cpe:/a:canonical:ubuntu_linux:libswscale4, p-cpe:/a:canonical:ubuntu_linux:libswscale5, p-cpe:/a:canonical:ubuntu_linux:libswscale7

Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Exploit Ease: No known exploits are available

Patch Publication Date: 8/24/2026

Vulnerability Publication Date: 7/24/2026

Reference Information

CVE: CVE-2026-66036, CVE-2026-66038, CVE-2026-66039

IAVB: 2026-B-0227

USN: 8671-1