Vim's NetBeans integration vulnerable to malicious command input

Summary

Vim's integration with NetBeans has a security flaw that can be exploited by a malicious NetBeans server. This could allow the server to execute unauthorized commands on the Vim system. Update to Vim version 9.1.2148 or later to fix the issue.

What to do

No fix is available yet. Check with your software vendor for updates.

Affected software

Vendor	Product	Affected versions	Fix available
vim	vim	<= 9.1.2148	–

Original title

Vim is an open source, command line text editor. Prior to 9.1.2148, a stack buffer overflow vulnerability exists in Vim's NetBeans integration when processing the specialKeys command, affecting Vim...

Original description

Vim is an open source, command line text editor. Prior to 9.1.2148, a stack buffer overflow vulnerability exists in Vim's NetBeans integration when processing the specialKeys command, affecting Vim builds that enable and use the NetBeans feature. The Stack buffer overflow exists in special_keys() (in src/netbeans.c). The while (*tok) loop writes two bytes per iteration into a 64-byte stack buffer (keybuf) with no bounds check. A malicious NetBeans server can overflow keybuf with a single specialKeys command. The issue has been fixed as of Vim patch v9.1.2148.

nvd CVSS3.1 7.5

Vulnerability type

CWE-121 Stack-based Buffer Overflow

https://github.com/vim/vim/commit/c5f312aad8e4179e437f81ad39a860cd0ef11970 Patch
https://github.com/vim/vim/releases/tag/v9.1.2148 Release Notes
https://github.com/vim/vim/security/advisories/GHSA-9w5c-hwr9-hc68 Patch Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/02/13/2 Mailing List Patch Third Party Advisory