CVE-2026-32249

Vim is an open source, command line text editor. From 9.1.0011 to before 9.2.0137, Vim's NFA regex compiler, when encountering a collection containing a combining character as the endpoint of a character range (e.g. [0-0\u05bb]), incorrectly emits the composing bytes of that character as separate NFA states. This corrupts the NFA postfix stack, resulting in NFA_START_COLL having a NULL out1 pointer. When nfa_max_width() subsequently traverses the compiled NFA to estimate match width for the look-behind assertion, it dereferences state->out1->out without a NULL check, causing a segmentation fault. This vulnerability is fixed in 9.2.0137.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.4

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/vim/vim/commit/36d6e87542cf823d833e451e09a90ee429899cec	Patch
https://github.com/vim/vim/releases/tag/v9.2.0137	Release Notes
https://github.com/vim/vim/security/advisories/GHSA-9phh-423r-778r	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:vim:vim:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-03-12 20:16

Updated : 2026-03-18 11:50

NVD link : CVE-2026-32249

Mitre link : CVE-2026-32249

CVE.ORG link : CVE-2026-32249

JSON object : View

Products Affected

vim

vim

CWE

CWE-476

NULL Pointer Dereference

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