CVE-2026-28421mediumCWE-122 CWE-20

Vim has a heap-buffer-overflow and a segmentation fault

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 5.3epss 0.2%

exploitation probability

0.2%top 92% of all CVEs

observed exploitation

nono source reports it

Vim is an open source, command line text editor. Versions prior to 9.2.0077 have a heap-buffer-overflow and a segmentation fault (SEGV) exist in Vim's swap file recovery logic. Both are caused by unvalidated fields read from crafted pointer blocks within a swap file. Version 9.2.0077 fixes the issue.

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

Affected products

vim · vim

References

https://github.com/vim/vim/commit/65c1a143c331c886dc28 https://github.com/vim/vim/releases/tag/v9.2.0077 https://github.com/vim/vim/security/advisories/GHSA-r2gw-2x48-jj5p http://www.openwall.com/lists/oss-security/2026/02/27/10