High severity · published Feb 13, 2026
CVE-2026-26269
Vim has a Netbeans specialKeys Stack Buffer Overflow
7.5
CVSS
0.3%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 27% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VI
vim · vim
< 9.1.2148 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-26269
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-26269
Patch
https://github.com/vim/vim/commit/c5f312aad8e4179e437f81ad39a860cd0ef11970
Release Notes
https://github.com/vim/vim/releases/tag/v9.1.2148
Patch
https://github.com/vim/vim/security/advisories/GHSA-9w5c-hwr9-hc68
Mailing List
http://www.openwall.com/lists/oss-security/2026/02/13/2
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