---
id: CVE-2022-1620
title: >-
  NULL Pointer Dereference in function vim_regexec_string at regexp.c:2729 in
  GitHub repository vim/vim prior to 8.2.4901
summary: >-
  NULL Pointer Dereference in function vim_regexec_string at regexp.c:2729 in
  GitHub repository vim/vim prior to 8.2.4901. NULL Pointer Dereference in
  function vim_regexec_string at regexp.c:2729 allows attackers to cause a
  denial of servi…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-476
vendor: vim
product: vim
affected:
  - vim < 8.2.4901
  - fedora = 34
  - fedora = 35
  - fedora = 36
  - macos < 13.0
patched:
  - vim 8.2.4901
  - macos 13.0
published: '2022-05-08'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T22:17:15.630'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2022-1620'
references:
  - url: 'http://seclists.org/fulldisclosure/2022/Oct/28'
    label: security@huntr.dev
  - url: 'http://seclists.org/fulldisclosure/2022/Oct/41'
    label: security@huntr.dev
  - url: 'https://github.com/vim/vim/commit/8e4b76da1d7e987d43ca960dfbc372d1c617466f'
    label: security@huntr.dev
  - url: 'https://huntr.dev/bounties/7a4c59f3-fcc0-4496-995d-5ca6acd2da51'
    label: security@huntr.dev
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A6BY5P7ERZS7KXSBCGFCOXLMLGWUUJIH/
    label: security@huntr.dev
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HIP7KG7TVS5YF3QREAY2GOGUT3YUBZAI/
    label: security@huntr.dev
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JUN33257RUM4RS2I4GZETKFSAXPETATG/
    label: security@huntr.dev
  - url: 'https://security.gentoo.org/glsa/202208-32'
    label: security@huntr.dev
  - url: 'https://security.gentoo.org/glsa/202305-16'
    label: security@huntr.dev
  - url: 'https://support.apple.com/kb/HT213488'
    label: security@huntr.dev
  - url: 'http://seclists.org/fulldisclosure/2022/Oct/28'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://seclists.org/fulldisclosure/2022/Oct/41'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://github.com/vim/vim/commit/8e4b76da1d7e987d43ca960dfbc372d1c617466f'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://huntr.dev/bounties/7a4c59f3-fcc0-4496-995d-5ca6acd2da51'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A6BY5P7ERZS7KXSBCGFCOXLMLGWUUJIH/
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HIP7KG7TVS5YF3QREAY2GOGUT3YUBZAI/
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JUN33257RUM4RS2I4GZETKFSAXPETATG/
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://security.gentoo.org/glsa/202208-32'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://security.gentoo.org/glsa/202305-16'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://support.apple.com/kb/HT213488'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-1620.json
  - url: 'https://access.redhat.com/security/cve/CVE-2022-1620'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2083029'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2022-1620'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2022-1620'
  - url: 'https://huntr.dev/bounties/7a4c59f3-fcc0-4496-995d-5ca6acd2da51/'
tags:
  - nvd
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.01593
epssPercentile: 0.7557
ingestedAt: '2026-10-08T23:16:47.342Z'
scores:
  nvd: 7.5
  vendor: 7.8
  cna: 6.6
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-10-08T21:12:33.803616Z'
---

## Overview

NULL Pointer Dereference in function vim_regexec_string at regexp.c:2729 in GitHub repository vim/vim prior to 8.2.4901. NULL Pointer Dereference in function vim_regexec_string at regexp.c:2729 allows attackers to cause a denial of service (application crash) via a crafted input.

## Affected

- `vim < 8.2.4901`
- `fedora = 34`
- `fedora = 35`
- `fedora = 36`
- `macos < 13.0`

## Remediation

Upgrade past the affected range:

- `vim 8.2.4901`
- `macos 13.0`

## Vendor advisories

- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 9 · updated 2026-10-09 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-1620.json)