CVE-2026-28421 MEDIUM

CVE-2026-28421: Vim has a heap-buffer-overflow and a segmentation fault

Vendor Vim
Product vim
Weakness CWE-20 · Input validation
Published February 27, 2026
Last update May 28, 2026
View on NVD All CVEs

CVSS base score

5.3/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

February 27, 2026 CVE published
May 28, 2026 Record updated