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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 an updated valkey package version 8.0.7-1.el10_1 that addresses these vulnerabilities. Users of Red Hat Enterprise Linux 10 should apply this update promptly following Red Hat's official guidance at https://access.redhat.com/articles/11258. No additional mitigation steps are indicated beyond applying the official patch.

Description

This update for valkey fixes the following issues - CVE-2025-67733: data tampering and denial of service via improper null character handling in Lua scripts (bsc#1258746). - CVE-2026-21863: denial of service via invalid clusterbus packet (bsc#1258788). - CVE-2026-23479: use-after-free in unblock client flow may lead to remote code execution (bsc#1264164). - CVE-2026-23631: Lua use-after-free via the master-replica synchronization mechanism may lead to remote code execution (bsc#1264165). - CVE-2026-25243: invalid memory access in RESTORE command via a specially crafted serialized payload may lead to remote code execution (bsc#1264166). Changes for valkey: - Update to 8.0.9. - Update to 8.0.7: * Fix ltrim should not call signalModifiedKey when no elements are removed (#2787) * Fix chained replica crash when doing dual channel replication (#2983) * Fix used_memory_dataset underflow due to miscalculated used_memory_overhead (#3005) * Avoids crash during MODULE UNLOAD when ACL rules reference a module command and subcommand (#3160) * Fix server assert on ACL LOAD and resetchannels (#3182) * Fix bug causing no response flush sometimes when IO threads are busy (#3205)

References

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