CVE-2021-4136: Apple Mac OS X

High severity, CVSS 7.8. EPSS: 1.8% chance of exploitation in the next 30 days.

vim is vulnerable to Heap-based Buffer Overflow

Affected products

• Apple Mac OS X: from 10.15, before 10.15.7 (fixed in 10.15.7); version 10.15.7 only
• Apple macOS: from 11.0, before 11.6.6 (fixed in 11.6.6); from 12.0, before 12.3 (fixed in 12.3)
• Fedoraproject Fedora: version 34 only; version 35 only
• Vim Vim: before 8.2.3847 (fixed in 8.2.3847)

Published 2021-12-19. Last modified 2026-10-08.