EUVD-2026-27396CVSS VectorNVD
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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4DescriptionNVD
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.
AnalysisAI
Use-after-free in Redis 7.2.0 through 8.6.2 allows authenticated attackers to achieve remote code execution by exploiting error handling in the unblock client flow. When a blocked client is evicted during command re-execution, the server fails to handle the error return from processCommandAndResetClient, triggering memory corruption. …
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RemediationAI
Within 24 hours: inventory all Redis deployments and identify instances running versions 7.2.0-8.6.2; verify current version via 'redis-cli info server'. Within 7 days: upgrade to Redis 8.6.3 or later across all affected instances, prioritizing production systems; test upgrades in staging first. …
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