CVE-2026-28420: Vim

Medium severity, CVSS 4.4. EPSS: 0.2% chance of exploitation in the next 30 days.

Vim is an open source, command line text editor. Prior to version 9.2.0076, a heap-based buffer overflow WRITE and an out-of-bounds READ exist in Vim's terminal emulator when processing maximum combining characters from Unicode supplementary planes. Version 9.2.0076 fixes the issue.

Affected products

• Vim Vim: before 9.2.0076 (fixed in 9.2.0076)

Published 2026-02-27. Last modified 2026-06-17.