CVE-2021-40656

libsixel before 1.10 is vulnerable to Buffer Overflow in libsixel/src/quant.c:867.

• CWE-787

• https://github.com/libsixel/libsixel/issues/25Exploit, Issue Tracking, Third Party Advisory
• https://github.com/libsixel/libsixel/issues/25Exploit, Issue Tracking, Third Party Advisory

Published

Apr 8, 2022

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2021-40649In Connx Version 6.2.0.1269 (20210623), a cookie can be issu…6.5
• CVE-2021-4065Use after free in autofill in Google Chrome prior to 96.0.46…8.8
• CVE-2021-40650In Connx Version 6.2.0.1269 (20210623), a cookie can be issu…6.5
• CVE-2021-40651OS4Ed OpenSIS Community 8.0 is vulnerable to a local file in…6.5
• CVE-2021-40654An information disclosure issue exist in D-LINK-DIR-615 B2 2…6.5
• CVE-2021-40655An informtion disclosure issue exists in D-LINK-DIR-605 B2 F…7.5
• CVE-2021-40658Textpattern 4.8.7 is affected by a HTML injection vulnerabil…4.8
• CVE-2021-4066Integer underflow in ANGLE in Google Chrome prior to 96.0.46…8.8
• CVE-2021-40660An issue was discovered in Delight Nashorn Sandbox 0.2.0. Th…7.5
• CVE-2021-40661A remote, unauthenticated, directory traversal vulnerability…7.5
• CVE-2021-40662A Cross-Site Request Forgery (CSRF) in Chamilo LMS 1.11.14 a…8.8
• CVE-2021-40663deep.assign npm package 0.0.0-alpha.0 is vulnerable to Impro…9.8