5.3

CVE-2025-25473: ffmpeg NULL Pointer Dereference

CVSS: 5.3v3.1MediumDeferred
AliasesUBUNTU-CVE-2025-25473DEBIAN-CVE-2025-25473
Published 18-02-2025Last modified 16-12-2025
Open JSON

Vulnerability summary

CVE-2025-25473 is a medium (CVSS 5.3) NULL Pointer Dereference vulnerability in ffmpeg. EPSS estimates a 0.42% chance of exploitation in the next 30 days, higher than 34.4% of scored vulnerabilities.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.42%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 9 · Related 7
DSA-6073-1MGASA-2025-0085OPENSUSE-SU-2025:14833-1OPENSUSE-SU-2025:14834-1OPENSUSE-SU-2025:15010-1OPENSUSE-SU-2026:21211-1

Timeline

  1. 18-02-2025
    PublishedVulnerability first disclosed.
  2. 16-12-2025
    Last modifiedVulnerability information updated.

Description

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

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.42%

Chance of exploitation in the next 30 days

Percentile

34%

Versus all other CVEs

30-day change

0.00 pp

From 0.42% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.42%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu2 products
  • ffmpeg< 7:2.8.17-0ubuntu0.1+esm10 | < 7:3.4.11-0ubuntu0.1+esm8 | < 7:4.2.7-0ubuntu0.1+esm8 | < 7:4.4.2-0ubuntu0.22.04.1+esm7 | < 7:6.1.1-3ubuntu5+esm3 | All versions (No fix recorded)
  • libavAll versions (No fix recorded)
Debian1 product
  • ffmpeg< 7:7.1.3-0+deb13u1 | < 7:8.0.1-2

2 vendors · 3 products

References

7 links