Chainguard: multiple eco-python-ffmpeg-8-minimal packages, multiple ffmpeg-8.1 packages: security update to 8.1.3-r0

high Tenable Cloud Security Plugin ID 476535

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

- FFmpeg versions 2.1 through 8.1.2 contains a heap buffer overflow vulnerability in the VobSub subtitle
demuxer that allows attackers to corrupt adjacent heap memory by supplying a malicious .sub/.idx subtitle
file declaring more distinct stream IDs than the fixed-size array bounds in libavformat/mpeg.c. Attackers
can craft a subtitle file with excessive distinct stream IDs to trigger unbounded writes beyond the
vobsub->q[] array boundary via ff_subtitles_queue_insert(), potentially achieving arbitrary code execution
in any application using FFmpeg's VobSub demuxer. (CVE-2026-64830)

Solution

Update the eco-python-ffmpeg-8-minimal library and its related packages to version 8.1.3-r0 or later.

Plugin Details

Severity: High

ID: 476535

Version: Revision 1.2

Type: Local

Family: Chainguard Local Security Checks

Published: 10/21/2026

Updated: 10/22/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.15

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-2026-64830

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

Vulnerability Information

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 6/25/2026

Reference Information

CVE: CVE-2026-64830

Detections

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