CVE-2026-28419 Details
Description
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.
A heap-based buffer underflow vulnerability has been identified in Vim's Emacs-style tags file parsing logic, affecting versions prior to 9.2.0075. The issue arises when Vim processes a malformed tags file with a delimiter at the start of a line, leading the application to read memory just before the allocated buffer. This vulnerability is located in the 'emacs_tags_parse_line()' function within 'src/tag.c'. The flaw allows for a 1-byte out-of-bounds read, which can cause a crash, resulting in a denial-of-service condition.
Users can upgrade to Vim version 9.2.0075 or later to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 2, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2026/02/27/8 | CVE | Mailing ListPatchThird Party Advisory |
| https://github.com/vim/vim/commit/9b7dfa2948c9e1e5e32a5812 | [email protected] | Patch |
| https://github.com/vim/vim/releases/tag/v9.2.0075 | [email protected] | Product |
| https://github.com/vim/vim/security/advisories/GHSA-xcc8-r6c5-hvwv | [email protected] | PatchVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-124 | Buffer Underwrite ('Buffer Underflow') | [email protected] |
| CWE-125 | Out-of-bounds Read | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| vim vim | < 9.2.0075 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Mar 4, 2026 | Initial Analysis | [email protected] |
| Feb 28, 2026 | CVE Modified | CVE |
| Feb 27, 2026 | New CVE Received | [email protected] |