Vulnerability · Published Apr 13, 2026 · Assigned by mitre
CVE-2026-30999
High 7.5
In plain English
A high-severity heap buffer overflow in the ffmpeg package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 39% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.5%top 60.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A heap buffer overflow in the av_bprint_finalize() function of FFmpeg v8.0.1 allows attackers to cause a Denial of Service (DoS) via a crafted input.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | ffmpeg | no fix listed | DEBIAN-CVE-2026-30999 |
| Debian:13 | ffmpeg | no fix listed | DEBIAN-CVE-2026-30999 |
| Debian:14 | ffmpeg | 7:8.1.2-1 | DEBIAN-CVE-2026-30999 |
| Ubuntu:25.10 | ffmpeg | no fix listed | UBUNTU-CVE-2026-30999 |
| Ubuntu:26.10 | ffmpeg | no fix listed | UBUNTU-CVE-2026-30999 |
Affected products (as reported)
Weakness: CWE-122 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H