---
id: CVE-2023-1170
title: Heap-based Buffer Overflow in GitHub repository vim/vim prior to 9.0.1376.
summary: Heap-based Buffer Overflow in GitHub repository vim/vim prior to 9.0.1376.
severity: medium
cvss: 6.6
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H'
cwe:
  - CWE-122
vendor: neovim
product: neovim
affected:
  - fedora = 36
  - fedora = 37
  - fedora = 38
  - neovim <= 0.8.3
  - vim < 9.0.1376
patched:
  - vim 9.0.1376
published: '2023-03-03'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T15:37:44.827'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2023-1170'
references:
  - url: 'https://github.com/vim/vim/commit/1c73b65229c25e3c1fd8824ba958f7cc4d604f9c'
    label: security@huntr.dev
  - url: 'https://huntr.dev/bounties/286e0090-e654-46d2-ac60-29f81799d0a4'
    label: security@huntr.dev
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DIAKPMKJ4OZ6NYRZJO7YWMNQL2BICLYV/
    label: security@huntr.dev
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IE44W6WMMREYCW3GJHPSYP7NK2VT5NY6/
    label: security@huntr.dev
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X4KDAU76Z7QNSPKZX2JAJ6O7KIEOXWTL/
    label: security@huntr.dev
  - url: 'https://github.com/vim/vim/commit/1c73b65229c25e3c1fd8824ba958f7cc4d604f9c'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://huntr.dev/bounties/286e0090-e654-46d2-ac60-29f81799d0a4'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DIAKPMKJ4OZ6NYRZJO7YWMNQL2BICLYV/
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IE44W6WMMREYCW3GJHPSYP7NK2VT5NY6/
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X4KDAU76Z7QNSPKZX2JAJ6O7KIEOXWTL/
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.00495
epssPercentile: 0.39957
ingestedAt: '2026-09-18T15:44:31.546Z'
---

## Overview

Heap-based Buffer Overflow in GitHub repository vim/vim prior to 9.0.1376.

## Affected

- `fedora = 36`
- `fedora = 37`
- `fedora = 38`
- `neovim <= 0.8.3`
- `vim < 9.0.1376`

## Remediation

Upgrade past the affected range:

- `vim 9.0.1376`