SB2026033031 - Denial of service in Vim NFA regex engine
Published: March 30, 2026
Security Bulletin ID
SB2026033031
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2026-32249)
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 update from vendor's website.