CVE-2026-73070

Vim: Stack Buffer Overflow in the Vim Socket Server

Published: Aug 11, 2026Updated: Sep 18, 2026 Sources: CVE List NVDCWE-121

5.5MEDIUM

Description

Vim is an open source, command line text editor. Prior to 9.2.0842, the socket server backend in src/socketserver.c accepts unbounded client connections in socketserver_accept(), causing descriptors to overflow fd_set structures in src/channel.c and fixed-size struct pollfd arrays in src/os_unix.c, which allows a local process that can connect to the server socket to corrupt stack memory or terminate the Vim server. This issue is fixed in version 9.2.0842.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:LAttack Vector

Local

AC:LAttack Complexity

Low

PR:LPrivileges Required

Low

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:NIntegrity

None

A:HAvailability

High

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Weaknesses

CWE-121

Affected Products

vim

oss-projectaka vi, vim/vim, gvim

vimOn-premDesktop App

Consumer Software / file-utility

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Privilege Escalation

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References

https://github.com/vim/vim/security/advisories/GHSA-49m8-wwxj-mr69

github.com

https://github.com/vim/vim/commit/5598618b2daf8e36b3bf0251caaefcf0bf8e85e4

github.com

https://github.com/vim/vim/releases/tag/v9.2.0842

github.com

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