Use After Free in Libsixel

CVE-2021-41715

libsixel 1.10.0 is vulnerable to Use after free in libsixel/src/dither.c:379.

Vulnerability class: Use-After-Free

EPSS: 0.010 (59.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Libsixel — versions 1.10.0
N/a — versions n/a

Weakness classification (CWE)

CWE-416 — Use After Free

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC, Issue Tracking)

Frequently asked questions

What is CVE-2021-41715?: CVE-2021-41715 is a high-severity vulnerability in Libsixel, classified under Use After Free. CVSS score: 8.8/10. Published 2022-04-08.
How severe is CVE-2021-41715?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2021-41715 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.