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Fencer Vulns
medium 5.3

CVE-2025-25473 json

FFmpeg git master before commit c08d30 was discovered to contain a memory leak in the avformat_free_context function in libavutil/mem.c.

published 2025-02-18 20 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-4559

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 36%
public exploits
0
none known

Summary

FFmpeg git master before commit c08d30 was discovered to contain a memory leak in the avformat_free_context function in libavutil/mem.c.

Patch / fix

  • ffmpeg Debian 13 7:7.1.3-0+deb13u1
  • ffmpeg Debian 14 7:8.0.1-2

debian advisories DEBIAN-CVE-2025-25473

  • ffmpeg Ubuntu Pro 16.04 LTS 7:2.8.17-0ubuntu0.1+esm10
  • ffmpeg Ubuntu Pro 18.04 LTS 7:3.4.11-0ubuntu0.1+esm8
  • ffmpeg Ubuntu Pro 20.04 LTS 7:4.2.7-0ubuntu0.1+esm8
  • ffmpeg Ubuntu Pro 22.04 LTS 7:4.4.2-0ubuntu0.22.04.1+esm7
  • ffmpeg Ubuntu Pro 24.04 LTS 7:6.1.1-3ubuntu5+esm3

ubuntu advisories UBUNTU-CVE-2025-25473

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • ffmpeg-4 SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE High Performance Computing 15 SP4-LTSS +1 more 4.4.5-150400.3.46.1
  • ffmpeg-4 SLE Workstation Extension 15 SP6, SLE Module for Package Hub 15 SP6, openSUSE Leap 15.6 4.4.5-150600.13.16.1

suse advisories SUSE-SU-2025:1128-1SUSE-SU-2025:0862-1

  • ffmpeg-7 openSUSE Leap 16.0 7.1.4-160000.1.1
  • ffmpeg-6 openSUSE Tumbleweed 6.1.2-3.1
  • ffmpeg-4 openSUSE Tumbleweed 4.4.5-3.1
  • ffmpeg-7 openSUSE Tumbleweed 7.1-3.1

opensuse advisories openSUSE-SU-2026:21211-1openSUSE-SU-2025:15010-1openSUSE-SU-2025:14833-1openSUSE-SU-2025:14834-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-25473 updated cvss 6.5

ffmpeg: NULL Pointer Dereference in FFmpeg

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
20 mo ago

Exploit prediction

0.42% chance of exploitation in the next 30 days, higher than 36% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.