PT-2026-6809 · Vim+4 · Vim+4

Rahulhoysala · Published 2026-02-05 · Updated 2026-03-24 · CVE-2026-25749

Positive Technologies (AI Summary)

CVSS v3.1

6.6

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Vim versions prior to 9.1.2132

Description Vim, an open source command line text editor, contains a heap buffer overflow in its tag file resolution logic when processing the 'helpfile' option. The issue resides in the get tagfname() function within src/tag.c. The STRCPY() function is used to copy the user-controlled 'helpfile' option value into a fixed-size heap buffer without sufficient bounds checking, leading to a potential overflow.

Recommendations Update to Vim version 9.1.2132 or later.

Exploit

Fix

DoS

Heap Based Buffer Overflow

Weakness Enumeration

CWE-122

Related Identifiers

ALSA-2026:4442

ALSA-2026:4715

ALSA-2026:5602

AZL-76764

AZL-77411

BDU:2026-05072

CVE-2026-25749

ECHO-CD9F-8404-8DDC

GHSA-5W93-4G67-MM43

RHSA-2026:4442

RHSA-2026:4715

RHSA-2026:5602

RHSA-2026:6502

RHSA-2026:6539

RHSA-2026:6540

RHSA-2026:6617

RHSA-2026:6619

RHSA-2026:6620

RHSA-2026:6729

RHSA-2026:6730

RHSA-2026:6731

RHSA-2026:6736

USN-8101-1

Affected Products

Linuxmint

Red Os

Rocky Linux

Ubuntu

Vim

References · 49

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25749.json · Exploit
• https://github.com/vim/vim/security/advisories/GHSA-5w93-4g67-mm43 · Vendor Advisory
• https://github.com/vim/vim/commit/0714b15940b245108e6e9d7aa2260dd849a26fa9 · Patch
• https://ubuntu.com/security/notices/USN-8101-1 · Vendor Advisory
• https://osv.dev/vulnerability/AZL-76764 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2026-5602.html · Vendor Advisory
• https://errata.rockylinux.org/RLSA-2026:4442 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-25749 · Security Note
• https://ubuntu.com/security/CVE-2026-28421 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-25749 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2026-6617.html · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-28422 · Vendor Advisory
• https://errata.almalinux.org/8/ALSA-2026-4442.html · Vendor Advisory
• https://errata.rockylinux.org/RLSA-2026:5602 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-25749 · Vendor Advisory