CVE-2026-28420

4.4 mediumEPSS 0.2%

Medium (4.4) in vim vim. 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.

Severity

CVSS 3.1

4.4 medium

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 10% of CVEs (scores of 2026-10-31)
CWEs: CWE-122, CWE-125
Published: 2026-02-27
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

vim:vim

References

https://github.com/vim/vim/commit/bb6de2105b160e729c34063
https://github.com/vim/vim/releases/tag/v9.2.0076
https://github.com/vim/vim/security/advisories/GHSA-rvj2-jrf9-2phg
http://www.openwall.com/lists/oss-security/2026/02/27/9

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