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CVE-2025-67733VulnerabilityPublished Updated

Red Hat Security Advisory: valkey security update

Affects Red Hat valkeySource GCVE Database

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Mentioned vulnerabilities

Authoritative record:CVE-2025-67733· High 8.5

Not known to be exploited · CVSS 8.5 High · fixed in Red Hat package updates : patch Red Hat valkey soon.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
8.5High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.6% chance of exploitation in 30 days – higher than 50% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 9.0.2, 8.1.6, 8.0.7 +1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 23 Feb 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade valkey and valkey-io/valkey to 9.0.2, 8.1.6, 8.0.7 or 7.2.12.

Affected software

ProductAffectedFixed in
valkey-iovalkeyAffected
  • >=9.0.0 <9.0.2
Fixed in
  • 9.0.2
valkey-iovalkeyAffected
  • >=8.1.0 <8.1.6
Fixed in
  • 8.1.6
valkey-iovalkeyAffected
  • >=8.0.0 <8.0.7
Fixed in
  • 8.0.7
valkey-iovalkeyAffected
  • <7.2.12
Fixed in
  • 7.2.12
GitHubvalkey-io/valkeypkg:github/valkey-io/valkeyOther threatsAffected
  • <7.2.12
  • <8.0.7
  • <8.1.6
  • <9.0.2
Fixed in
  • 7.2.12
  • 8.0.7
  • 8.1.6
  • 9.0.2

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Red Hat has released updated valkey packages addressing these vulnerabilities. Users of Red Hat Enterprise Linux 10.0 Extended Update Support should apply the security update described in advisory RHSA-2026:5445 promptly. Detailed update instructions are available at https://access.redhat.com/articles/11258. No additional mitigation actions are indicated by the vendor advisory.

Description

Two security vulnerabilities have been identified in Valkey, an advanced key-value store used in Red Hat Enterprise Linux 10.0 Extended Update Support. The first vulnerability (CVE-2025-67733) involves data tampering and denial of service caused by improper handling of null characters in Lua scripts. The second vulnerability (CVE-2026-21863) allows denial of service via invalid clusterbus packets. Red Hat has issued an important security update addressing these issues. The update is available for multiple architectures and versions of Red Hat Enterprise Linux 10.0. No known exploits in the wild have been reported at this time.

References

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