CVE-2026-28421

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

CVSS 5.3 MEDIUMEPSS 0.2%CWE-122 CWE-20

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 5.3EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

27 Feb 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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

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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