CVE-2026-28421

Severity CVSS v4.0:

Pending analysis

Type:

CWE-20 Input Validation

Publication date:

27/02/2026

Last modified:

28/02/2026

Description

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&#39;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.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L CVSS v3.1 Severity and Metrics:

Base Score: 5.30 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope (S): Unchanged
Confidentiality (C): Low
Integrity (I): Low
Availability (A): Low

Base Score 3.x

5.30

Severity 3.x

MEDIUM

References to Advisories, Solutions, and Tools

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