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CVE-2026-23479

Redis•HIGH · CVSS 8.8•No exploitation reported

What is CVE-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 `processCommandAndResetClient` 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.

CVSS8.8 NVD 3.1
SeverityHIGH
ExploitationNo exploitation reported
EPSS3% · P86
Triage statusNo Known Exploit
ActionPatch this week
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWECWE-416
NVD published2026-05-05
NVD last modified2026-07-25

Timeline

  • 2026-05-05Published to the U.S. National Vulnerability Database (NVD)
  • 2026-06-04First covered in a defend.network daily briefing
  • 2026-07-25NVD record last updated

Affected product

Redis

Remediation Steps

  1. Apply the vendor security update for Redis as a priority.
  2. Restrict network exposure of the affected service to trusted sources until patched.
  3. Review logs and detections for indicators of exploitation.
  4. Confirm fixed versions against the official vendor advisory before deploying.

References

Referenced in our briefings & reports

Related vulnerabilities

Browse all tracked CVEs in the defend.network CVE database →

🤖 This CVE page is generated by defend.network from NVD, CISA KEV, EPSS, and our verified daily briefings. Severity and exploitation data come from official sources; always verify remediation steps against the official vendor advisory before acting in production.