Improper Neutralization in Valkey - CVE-2025-67733

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Main Vulnerability Database Vulnerabilities #VU128026

Improper Neutralization in Valkey - CVE-2025-67733

Published: April 27, 2026


Vulnerability identifier: #VU128026
CSH Severity: Medium
CVSS v4: 7.1 [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]
CVE-ID: CVE-2025-67733
CWE-ID: CWE-707
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

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.


Affected software

Valkey
Debian Linux
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Real Time 15
Fedora
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Server Applications Module
openSUSE Leap
Ubuntu
redis (Debian package)
valkey (Ubuntu package)
valkey
valkey (Red Hat package)
valkey-devel
valkey-compat-redis
valkey-debuginfo
valkey-debugsource
valkey (Debian package)

How to mitigate CVE-2025-67733

Install security update from vendor's website.

Valkey - addressed in versions 7.2.12, 8.0.7, 8.1.6, 9.0.2
redis (Debian package) - addressed in versions 5:7.0.15-1~deb12u7, 8.0.2-3+deb13u2
valkey (Ubuntu package) - addressed in versions 7.2.12+dfsg1-0ubuntu0.1, 8.1.6+dfsg1-0ubuntu0.1
valkey - addressed in versions 8.0.7-1.el8, 8.0.7-1.fc42, 8.1.6-1.fc43, 9.0.3-1.fc44
valkey (Red Hat package) - addressed in versions 8.0.7-1.el9_7, 8.0.7-1.el10_0, 8.0.7-1.el10_1
valkey-devel - addressed in versions 8.0.7-150600.13.20.1, 8.0.7-150700.3.14.1
valkey-compat-redis - addressed in versions 8.0.7-150600.13.20.1, 8.0.7-150700.3.14.1
valkey-debuginfo - addressed in versions 8.0.7-150600.13.20.1, 8.0.7-150700.3.14.1
valkey - addressed in versions 8.0.7-150600.13.20.1, 8.0.7-150700.3.14.1
valkey-debugsource - addressed in versions 8.0.7-150600.13.20.1, 8.0.7-150700.3.14.1
valkey (Debian package) - update to 8.1.1+dfsg1-3+deb13u2

External References

Related Security Bulletins