#VU124677 NULL pointer dereference in Vim - CVE-2026-32249
Published: March 30, 2026
Vulnerability identifier: #VU124677
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-32249
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Vim
Vim
Software vendor:
Vim.org
Vim.org
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error within the nfa_max_width() function when the NFA regex engine processes a look-behind assertion containing a collection with a combining Unicode character as a range endpoint. A remote attacker can trick the victim into opening a specially crafted file and crash the application.
Remediation
Install updates from vendor's website.