CVE-2026-28419 MEDIUM

CVE-2026-28419: Vim has Heap-based Buffer Underflow in Emacs tags parsing

Vendor Vim
Product vim
Weakness CWE-124
Published February 27, 2026
Last update March 2, 2026

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. Prior to version 9.2.0075, a heap-based buffer underflow exists in Vim's Emacs-style tags file parsing logic. When processing a malformed tags file where a delimiter appears at the start of a line, Vim attempts to read memory immediately preceding the allocated buffer. Version 9.2.0075 fixes the issue.

Key dates

02Disclosure timeline

February 27, 2026 CVE published
March 2, 2026 Record updated