Vulnerability · Published Apr 4, 2025 · Assigned by mitre
CVE-2025-29476
Medium 5.5
In plain English
A medium-severity buffer overflow in the c-blosc2 package (Debian). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 16% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.2%top 83.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
Buffer Overflow vulnerability in compress_chunk_fuzzer with oss-fuzz on commit 16450518afddcb3139de627157208e49bfef6987 in c-blosc2 v.2.17.0 and before.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:13 | c-blosc2 | 2.17.1+ds-1 | DEBIAN-CVE-2025-29476 |
| Debian:14 | c-blosc2 | 2.17.1+ds-1 | DEBIAN-CVE-2025-29476 |
| Ubuntu:24.04:LTS | c-blosc2 | no fix listed | UBUNTU-CVE-2025-29476 |
| Ubuntu:25.10 | c-blosc2 | no fix listed | UBUNTU-CVE-2025-29476 |
Affected products (as reported)
Weakness: CWE-120 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L