CVE-2023-0433

Heap-based Buffer Overflow in GitHub repository vim/vim prior to 9.0.1225.

What this means for your business

It affects Apple Macos. 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 0.6% chance of attack attempts being seen in the next 30 days, ranking above 43% of all known flaws.

What to do

1Check whether your company or your suppliers run Apple Macos, and which version. The affected versions are listed further down this page.
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.

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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-122
Assigned by: security@huntr.dev

Dates

Published: 2023-01-21
Last modified: 2026-09-24
Sources: NVD

Affected products

Apple Macos- 11.7.5, 12.0.0 - 12.6.4, 13.0 - 13.3
Fedoraproject Fedora36, 37
Neovim Neovim0.1.0 - 0.8.3
Vim Vim- 9.0.1225

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