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Vulnerabilities

Vulnerability · CVE-2026-23479

Redis is an in-memory data structure store.

Published May 5, 2026 · catalog updated Jul 25, 2026 · Redis is an in-memory

Check if you run it

No confirmed exploitation is on record for CVE-2026-23479. EPSS is 1.51%. Act only if a listed version of Redis is an in-memory is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Redis is an in-memory).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.7
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
1.51%
Remediation
Advisory link
Affected products
cpe redis/redis

Redis is an in-memory data structure store. In redis-server from 7.2.0 until 8.6.3, the unblock client flow does not handle an error return from when re-executing a blocked command. If a blocked client is evicted during this flow, an authenticated attacker can trigger a use-after-free that may lead to remote code execution. This has been patched in version 8.6.3.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe redis/redisversion unspecified

How to fix CVE-2026-23479

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-23479. EPSS is 1.51%. Act only if a listed version of Redis is an in-memory is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-416: Use After Free. EPSS 1.51%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. May 5, 2026 · NIST NVD

    Detected

    Redis is an in-memory data structure store. In redis-server from 7.2.0 until 8.6.3, the unblock client flow does not handle an error return from when re-executing a blocked command. If a blocked client is evicted during this flow, an authenticated attacker can trigger a use-after-free that may lead to remote code execution. This has been patched in version 8.6.3.

  2. Jul 25, 2026 · NIST NVD

    Updated

    Redis is an in-memory data structure store. In redis-server from 7.2.0 until 8.6.3, the unblock client flow does not handle an error return from when re-executing a blocked command. If a blocked client is evicted during this flow, an authenticated attacker can trigger a use-after-free that may lead to remote code execution. This has been patched in version 8.6.3.

Sources

  • CVE.orgVulnerability recordCVE-2026-23479

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-23479

    30-day exploitation probability 1.5%

    first.org
  • NIST NVDVulnerability recordCVE-2026-23479

    Redis is an in-memory data structure store. In redis-server from 7.2.0 until 8.6.3, the unblock client flow does not handle an error return from when re-executing a blocked command. If a blocked client is evicted during this flow, an authenticated a

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.