---
id: CVE-2026-73070
title: 'Vim is an open source, command line text editor'
summary: >-
  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/c…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-121
  - CWE-120
vendor: vim
product: vim
affected:
  - vim < 9.2.0842
patched:
  - vim 9.2.0842
published: '2026-08-11'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T14:47:30.087'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-73070'
references:
  - url: 'https://github.com/vim/vim/commit/5598618b2daf8e36b3bf0251caaefcf0bf8e85e4'
    label: security-advisories@github.com
  - url: 'https://github.com/vim/vim/releases/tag/v9.2.0842'
    label: security-advisories@github.com
  - url: 'https://github.com/vim/vim/security/advisories/GHSA-49m8-wwxj-mr69'
    label: security-advisories@github.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-73070.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-73070'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2514032'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-73070'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-73070'
  - url: 'https://access.redhat.com/errata/RHSA-2026:56636'
tags:
  - nvd
  - csaf
  - vex
  - red-hat
epss: 0.00186
epssPercentile: 0.07257
ingestedAt: '2026-09-18T15:44:31.557Z'
---

## Overview

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.

## Affected

- `vim < 9.2.0842`

## Remediation

Upgrade past the affected range:

- `vim 9.2.0842`

## Vendor advisories

- **RHSA-2026:56636** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-08-19 · [advisory](https://access.redhat.com/errata/RHSA-2026:56636)
- **Red Hat VEX** · Moderate · affected: Red Hat OpenShift Container Platform 4, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat OpenShift Container Platform 4 · updated 2026-09-18 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-73070.json)