CVE-2023-4751 Heap-based Buffer Overflow in vim/vim

High 7.8 Published 3 Sep 2023 Updated 13 Feb 2025

A heap-based buffer overflow in Vim allows attackers to execute arbitrary code or cause a denial of service via crafted input.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2023-4751?

CVE-2023-4751 is a high-severity memory corruption vulnerability in Apple Macos, published on 3 Sep 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

Heap-based Buffer Overflow in GitHub repository vim/vim prior to 9.0.1331.

Weakness: CWE-787, CWE-122

Which versions are affected by CVE-2023-4751?

It affects 3 products.

Products include Apple Macos, Neovim Neovim, Vim Vim.

How do I fix CVE-2023-4751?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2023-4751 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-4751 exists.

All Apple Macos vulnerabilities

Sources

Also known as BELL-CVE-2023-4751, DEBIAN-CVE-2023-4751, ECHO-da96-3aea-fc46, GHSA-mfhq-77wv-g7gh, UBUNTU-CVE-2023-4751.