Heap-based Buffer Overflow Affecting vim package, versions <9.1.2132-r0


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.01% (1st percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Heap-based Buffer Overflow vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-ALPINE323-VIM-15257041
  • published11 Feb 2026
  • disclosed6 Feb 2026

Introduced: 6 Feb 2026

CVE-2026-25749  (opens in a new tab)
CWE-122  (opens in a new tab)

How to fix?

Upgrade Alpine:3.23 vim to version 9.1.2132-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream vim package and not the vim package as distributed by Alpine. See How to fix? for Alpine:3.23 relevant fixed versions and status.

Vim is an open source, command line text editor. Prior to version 9.1.2132, a heap buffer overflow vulnerability exists in Vim's tag file resolution logic when processing the 'helpfile' option. The vulnerability is located in the get_tagfname() function in src/tag.c. When processing help file tags, Vim copies the user-controlled 'helpfile' option value into a fixed-size heap buffer of MAXPATHL + 1 bytes (typically 4097 bytes) using an unsafe STRCPY() operation without any bounds checking. This issue has been patched in version 9.1.2132.

CVSS Base Scores

version 3.1