CVE-2026-28419

low-risk

Published 2026-02-27

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.

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/9b7dfa2948c9e1e5e32a5812

Product https://github.com/vim/vim/releases/tag/v9.2.0075

Patch https://github.com/vim/vim/security/advisories/GHSA-xcc8-r6c5-hvwv

Mailing List http://www.openwall.com/lists/oss-security/2026/02/27/8

/ 100

low-risk

Severity 18/34 · Moderate

Exploitability 0/34 · Minimal

Exposure 5/34 · Minimal