PT-2026-25059 · Vim+3 · Vim+3

Nathan Mills · CVE-2026-32249 · Published 2026-01-01 · Updated 2026-05-24

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Vim versions 9.1.0011 through 9.2.0136

Description Vim, a command line text editor, has an issue where its NFA regex compiler can experience a segmentation fault. This occurs when the compiler encounters a character range containing a combining character as the endpoint (for example, [0-0u05bb]). The compiler incorrectly processes the composing bytes of the character, corrupting the NFA postfix stack and leading to a NULL pointer dereference in the nfa max width() function when estimating match width for look-behind assertions. This dereference happens without a NULL check, causing the segmentation fault.

Recommendations Update Vim to version 9.2.0137 or later.

Exploit

Fix

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2026-32249

ECHO-FB0D-F99A-50A5

GHSA-9PHH-423R-778R

MGASA-2026-0055

USN-8171-1

Affected Products

Linuxmint

Red Os

Ubuntu

Vim

References · 30

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32249.json · Exploit
• https://github.com/vim/vim/security/advisories/GHSA-9phh-423r-778r · Vendor Advisory
• https://github.com/vim/vim/commit/36d6e87542cf823d833e451e09a90ee429899cec · Patch
• https://security-tracker.debian.org/tracker/CVE-2026-32249 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-34982 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2026-32249 · Vendor Advisory
• https://osv.dev/vulnerability/USN-8171-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-32249 · Security Note
• https://osv.dev/vulnerability/CVE-2026-32249 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2026-0055.html · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-32249 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-32249 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2026-0055 · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2026-32249 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-8171-1 · Vendor Advisory