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Vim < 9.1.2132 Buffer Overflow (GHSA-5w93-4g67-mm43)

medium Nessus Plugin ID 298656

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Synopsis

The remote host is missing a security update.

Description

The version of Vim installed on the remote host is prior to 9.1.2132. It is, therefore, affected by a vulnerability as referenced in the GHSA-5w93-4g67-mm43 advisory.

 - 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. (CVE-2026-25749)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Vim version 9.1.2132 or later.

See Also

http://www.nessus.org/u?c87397b9

Plugin Details

Severity: Medium

ID: 298656

File Name: vim_9_1_2132.nasl

Version: 1.6

Type: local

Family: Misc.

Published: 2/11/2026

Updated: 2/24/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.6

Vector: CVSS2#AV:L/AC:L/Au:S/C:N/I:N/A:C

CVSS Score Source: CVE-2026-25749

CVSS v3

Risk Factor: Medium

Base Score: 6.6

Temporal Score: 5.9

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:vim:vim

Required KB Items: installed_sw/Vim

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2/5/2026

Vulnerability Publication Date: 2/5/2026

Reference Information

CVE: CVE-2026-25749

IAVA: 2026-A-0138-S