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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

Official fixes are available in valkey versions 9.0.2, 8.1.6, 8.0.7, and 7.2.12. Users should upgrade to these or later versions to remediate the vulnerability. Refer to the Red Hat advisories RHSA-2026:3507 and RHSA-2026:5445 for detailed patching instructions. No additional mitigation is required beyond applying the official patches.

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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