Vulnerability Intelligence Report
redis-server use-after-free in unblock client flow may allow remote code execution
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.
No Active Exploit Signals
CVSS Base Score
7.7
HIGH
EPSS Probability:1.29%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-416 ↗CWE-416: Use After Free
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| redis | redis | >= 7.2.0, < 8.6.3 (affected) |
Threat Intelligence Signals
EPSS Score
1.286%
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | GitHub, Inc. · Vendor · USA |
| Reserved | 2026-01-13T15:47:41 |
| Published | 2026-05-05T16:36:05 |
| Last Updated | 2026-07-16T12:04:42 |
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