Vulnerability Intelligence Report
Redis Lua Use-After-Free may lead to remote code execution
CVE-2025-49844
Redis is an open source, in-memory database that persists on disk. Versions 8.2.1 and below allow an authenticated user to use a specially crafted Lua script to manipulate the garbage collector, trigger a use-after-free and potentially lead to remote code execution. The problem exists in all versions of Redis with Lua scripting. This issue is fixed in version 8.2.2. To workaround this issue without patching the redis-server executable is to prevent users from executing Lua scripts. This can be done using ACL to restrict EVAL and EVALSHA commands.
Nuclei Template
CVSS Base Score
10.0
CRITICAL
Exploitability:3.2
Impact Score:6.1
EPSS Probability:86.27%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
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Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-416 ↗CWE-416: Use After Free
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| redis | redis | < 8.2.2 (affected) |
Threat Intelligence Signals
Nuclei Template
SCANNER AVAILABLE
EPSS Score
86.268%
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | GitHub, Inc. · Vendor · USA |
| Reserved | 2025-06-11T14:33:57 |
| Published | 2025-10-03T19:27:23 |
| Last Updated | 2026-03-20T14:08:37 |
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