Heap-based buffer overflow in Vim - #VU139391
Published: July 27, 2026
Vulnerability identifier: #VU139391
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error. A remote attacker can trick a victim to open a specially crafted spell file, trigger a heap-based buffer overflow and cause a denial of service on the target system.
Affected software
Vim
Remediation
Install updates from vendor's website.
Vim - update to 9.2.0846