Unrated severityNVD Advisory· Published Feb 27, 2026· Updated Mar 2, 2026
Vim has Heap-based Buffer Overflow and OOB Read in :terminal
CVE-2026-28420
Description
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
2Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
3- github.com/vim/vim/commit/bb6de2105b160e729c34063mitrex_refsource_MISC
- github.com/vim/vim/releases/tag/v9.2.0076mitrex_refsource_MISC
- github.com/vim/vim/security/advisories/GHSA-rvj2-jrf9-2phgmitrex_refsource_CONFIRM
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