CVE-2026-57454 Vim: Out-of-bounds Read with Text Properties
A crafted undo or swap file in Vim can trigger an out-of-bounds read, potentially disclosing heap memory or crashing the editor.
- 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-2026-57454?
CVE-2026-57454 is a medium-severity vulnerability in Vim Vim, published on 25 Jun 2026. 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
Vim is an open source, command line text editor. From 9.2.0320 until 9.2.0679, a crafted undo or swap file can store a virtual-text property whose offset and length point outside the line's property data. When Vim restores or displays such a line it converts the offset into a pointer and reads the virtual text without bounds checking, causing an out-of-bounds read that can crash Vim or disclose adjacent heap memory. This vulnerability is fixed in 9.2.0679.
Weakness: CWE-125
Which versions are affected by CVE-2026-57454?
It affects 1 product.
Products include Vim Vim.
How do I fix CVE-2026-57454?
Upgrade to a fixed version.
Is CVE-2026-57454 being exploited?
There is no known exploitation of CVE-2026-57454 in the wild and no public exploit code.
Other vulnerabilities in Vim Vim
Sources
Also known as ALPINE-CVE-2026-57454, AZL-91122, BELL-CVE-2026-57454, DEBIAN-CVE-2026-57454, GHSA-ww8h-47xp-hp4w, MINI-4pwv-45hm-8635.