Vulnerability · Published Feb 23, 2026 · Assigned by mitre
CVE-2025-61146
Medium 4.0
In plain English
A medium-severity memory leak in the libsixel package (Debian). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities).
Severity (CVSS 3.1)4.0Medium
Exploit odds (30 days)0.1%top 96.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
saitoha libsixel until v1.8.7 was discovered to contain a memory leak via the component malloc_stub.c.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | libsixel | no fix listed | DEBIAN-CVE-2025-61146 |
| Debian:13 | libsixel | no fix listed | DEBIAN-CVE-2025-61146 |
| Debian:14 | libsixel | no fix listed | DEBIAN-CVE-2025-61146 |
| Ubuntu:22.04:LTS | libsixel | no fix listed | UBUNTU-CVE-2025-61146 |
| Ubuntu:24.04:LTS | libsixel | no fix listed | UBUNTU-CVE-2025-61146 |
| Ubuntu:25.10 | libsixel | no fix listed | UBUNTU-CVE-2025-61146 |
| Ubuntu:26.04:LTS | libsixel | no fix listed | UBUNTU-CVE-2025-61146 |
| Ubuntu:26.10 | libsixel | no fix listed | UBUNTU-CVE-2025-61146 |
Affected products (as reported)
Weakness: CWE-401 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L