CVE Database · CVE-2020-21548
CVSS v3.1
8.8
EPSS
1.07%
Published
Sep 17, 2021
Modified
Apr 24, 2026
Public PoC / Exploit (1)
All weaponized →Links to public security research (Exploit-DB, Nuclei, Trickest, GitHub) for defensive use only.
Description
Libsixel 1.8.3 contains a heap-based buffer overflow in the sixel_encode_highcolor function in tosixel.c.
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HWeaknesses (CWE)
Affected Products (1)
References (2)