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7.8High

Neovim Neovim

CVE-2023-5535

Use After Free in GitHub repository vim/vim prior to v9.0.2010.

What this means for your business

  • It affects Neovim. It matters if your company, or a supplier that handles your data, runs it.
  • Code showing how to exploit it has been published, but real attacks have not been confirmed.
  • An attacker can use it only with access to the machine itself, without a login, but only after tricking someone into an action such as opening a file or a link.
  • FIRST's prediction model gives it a 0.5% chance of attack attempts being seen in the next 30 days, ranking above 44% of all known flaws.

What to do

  1. 1Check whether your company or your suppliers run Neovim, and which version. The affected versions are listed further down this page.
  2. 2If you do, apply the vendor's fix. A patch or vendor advisory has been published.

Not sure if your company is exposed?

Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.

Check if you’re exposedBook a call

Scoring

CVSS
7.8 (v3.1)
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-416
Assigned by
security@huntr.dev

Dates

Published
2023-10-11
Last modified
2026-09-17
Sources
NVD

Affected products

  • Neovim Neovim- 0.9.5
  • Vim Vim- 9.0.2010
  • Fedoraproject Fedora37, 38, 39

As listed in the NVD configuration data. Not a statement about your estate.

References