Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Vim | Vim | < 9.1.2148 |
Related Weaknesses (CWE)
References
- https://github.com/vim/vim/commit/c5f312aad8e4179e437f81ad39a860cd0ef11970Patch
- https://github.com/vim/vim/releases/tag/v9.1.2148Release Notes
- https://github.com/vim/vim/security/advisories/GHSA-9w5c-hwr9-hc68PatchVendor Advisory
- http://www.openwall.com/lists/oss-security/2026/02/13/2Mailing ListPatchThird Party Advisory
FAQ
What is CVE-2026-26269?
CVE-2026-26269 is a vulnerability with a CVSS score of 5.4 (MEDIUM). 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 bu...
How severe is CVE-2026-26269?
CVE-2026-26269 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-26269?
Check the references section above for vendor advisories and patch information. Affected products include: Vim Vim.