CVE-2026-28421

low-risk

Published 2026-02-27

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.

Do I need to act?

0.01% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 5.3/10 Medium

LOCAL / LOW complexity

Affected Products (1)

Vim

Affected Vendors

Vim

References (4)

Patch https://github.com/vim/vim/commit/65c1a143c331c886dc28

Product https://github.com/vim/vim/releases/tag/v9.2.0077

Patch https://github.com/vim/vim/security/advisories/GHSA-r2gw-2x48-jj5p

Mailing List http://www.openwall.com/lists/oss-security/2026/02/27/10

/ 100

low-risk

Severity 18/34 · Moderate

Exploitability 0/34 · Minimal

Exposure 5/34 · Minimal