CVE-2026-57452

A flaw was found in Vim, an open source command-line text editor. When opening a specially crafted encrypted file using the VimCrypt~04! or VimCrypt~05! methods, an attacker could trigger an unsigned length calculation error. This issue leads to an out-of-bounds read, causing Vim to crash and resulting in a denial of service.

This Moderate impact vulnerability in Vim arises from an out-of-bounds read when processing a specially crafted libsodium-encrypted file. If a user opens a malicious file encrypted with VimCrypt~04! or VimCrypt~05! and the file body is shorter than a single libsodium secretstream header, Vim may crash. This issue requires user interaction to open a malformed file and the +sodium feature to be enabled, limiting its exploitability in typical Red Hat environments.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Ensure the spell checker is turned off by running :set nospell within Vim. Do not open untrusted or suspicious files—particularly those encrypted with libsodium methods (VimCrypt~04! or VimCrypt~05!)—within the Vim editor. This prevents the execution of the vulnerable decryption routine