CVE-2025-67733: Valkey Affected by RESP Protocol Injection via Lua error_reply

Published Feb 23, 2026
·
Updated

Valkey Affected by RESP Protocol Injection via Lua errorreply

Other sources

Valkey is a distributed key-value database. Prior to versions 9.0.2, 8.1.6, 8.0.7, and 7.2.12, a malicious user can use scripting commands to inject arbitrary information into the response stream for the given client, potentially corrupting or returning tampered data to other users on the same connection. The error handling code for lua scripts does not properly handle null characters. Versions 9.0.2, 8.1.6, 8.0.7, and 7.2.12 fix the issue.

NVD

Affected Software

6 affected componentsFixes available
Valkey Valkey<9.0.2, <8.1.6, <8.0.7, <7.2.12
Lfprojects Valkey<7.2.12
Lfprojects Valkey>=8.0.0<8.0.7
Lfprojects Valkey>=8.1.0<8.1.6
Lfprojects Valkey>=9.0.0<9.0.2
Microsoft azl3 valkey 8.0.6-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 9.0.2
  2. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 8.1.6
  3. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 8.0.7
  4. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 7.2.12

Event History

Feb 23, 2026
CVE Published
via MITRE·07:39 PM
Data Sourced
via MITRE·07:39 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·08:28 PM
DescriptionSeverityWeaknessAffected Software
Data Sourced
via Red Hat·09:03 PM
DescriptionSeverityAffected Software
Feb 26, 2026
Data Sourced
via Microsoft·09:01 AM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·09:01 AM
DescriptionSeverity
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Frequently Asked Questions

1

What is the severity of CVE-2025-67733?

The severity of CVE-2025-67733 has not been explicitly defined but poses critical risks due to potential data tampering.

2

How do I fix CVE-2025-67733?

To fix CVE-2025-67733, upgrade to Valkey versions 9.0.2, 8.1.6, 8.0.7, or 7.2.12 or later.

3

Who is affected by CVE-2025-67733?

CVE-2025-67733 affects users of Valkey versions prior to 9.0.2, 8.1.6, 8.0.7, and 7.2.12.

4

What kind of attack does CVE-2025-67733 enable?

CVE-2025-67733 enables a malicious user to inject arbitrary information into the response stream, potentially corrupting data.

5

What products are impacted by CVE-2025-67733?

The impacted product by CVE-2025-67733 is Valkey, specifically versions prior to 9.0.2, 8.1.6, 8.0.7, and 7.2.12.

Contact

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