Improper Neutralization in Valkey - CVE-2025-67733
Published: April 27, 2026
Vulnerability identifier: #VU128026
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-67733
CWE-ID: CWE-707
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Valkey
Affected software:
Valkey
Valkey
Detailed vulnerability description
The vulnerability allows a remote user to corrupt response data for other users on the same connection.
The vulnerability exists due to improper handling of null characters in lua script error handling code when processing scripting command error replies. A remote user can use scripting commands to inject arbitrary information into the response stream to corrupt response data for other users on the same connection.
The issue can affect other users sharing the same connection.
How to mitigate CVE-2025-67733
Install security update from vendor's website.