VULNERABILITY INTELLIGENCE
CVE-2020-21548
CVSS score8.8 HIGH
EPSS probability1.06%
CISA KEVNot currently listed
Published2021-09-17
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Description
Libsixel 1.8.3 contains a heap-based buffer overflow in the sixel_encode_highcolor function in tosixel.c.
Weakness classification
- nvd@nist.gov: CWE-787
Primary references
- cve@mitre.org — Exploit, Issue Tracking, Patch, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Exploit, Issue Tracking, Patch, Third Party Advisory