CVE-2026-28421

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

Published: 2/27/2026 Last updated: 3/2/2026 Reserved: 2/27/2026

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.

CNA assigner: GitHub_M (a0819718-46f1-4df5-94e2-005712e83aaa) Requested by: n/a

Metrics

Version	Score	Severity	Vector String
3.1	5.3	Medium	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

Opam packages affected (1)

conf-vim

Products affected (1)

Product	Vendor	Version
vim	vim	< 10.0.25398.1009

References (8)

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