7.5

CVE-2023-6603: ffmpeg NULL Pointer Dereference

CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2023-6603USN-7890-1DEBIAN-CVE-2023-6603
Published 31-12-2024Last modified 21-08-2025
Open JSON

Vulnerability summary

CVE-2023-6603 is a high (CVSS 7.5) NULL Pointer Dereference vulnerability in ffmpeg. EPSS estimates a 0.58% chance of exploitation in the next 30 days, higher than 46.5% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
40/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.58%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 3 · Related 2
DLA-4440-1OPENSUSE-SU-2026:12064-1USN-7830-1

Timeline

  1. 31-12-2024
    PublishedVulnerability first disclosed.
  2. 21-08-2025
    Last modifiedVulnerability information updated.

Description

A flaw was found in FFmpeg's HLS playlist parsing. This vulnerability allows a denial of service via a maliciously crafted HLS playlist that triggers a null pointer dereference during initialization.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.58%

Chance of exploitation in the next 30 days

Percentile

47%

Versus all other CVEs

30-day change

+0.02 pp

From 0.56% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.58%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (bugzilla.redhat.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Ubuntu2 products
  • ffmpeg< 7:2.8.17-0ubuntu0.1+esm13 | < 7:3.4.11-0ubuntu0.1+esm11 | < 7:4.2.7-0ubuntu0.1+esm11 | < 7:4.4.2-0ubuntu0.22.04.1+esm10 | All versions (No fix recorded)
  • libavAll versions (No fix recorded)
Debian1 product
  • ffmpeg< 7:5.0.1-2
Ffmpeg1 product

3 vendors · 4 products

References

6 links