CVE-2025-49844
9.9 · CRITICALOverview
CVE-2025-49844 is a critical-severity vulnerability affecting redis redis. It was published on October 3, 2025 and has a CVSS 3.1 base score of 9.9 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 9.9, rated CRITICAL. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
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.
Remediation
Check the references section for vendor advisories and patches from redis. Update redis to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| redis | redis | >= 0, < 6.2.20 | Affected |
| lfprojects | valkey | >= 0, < 7.2.11 | Affected |
References
Frequently Asked Questions
What is CVE-2025-49844?
CVE-2025-49844 is a critical-severity vulnerability affecting redis redis. It was published on October 3, 2025 and has a CVSS 3.1 base score of 9.9 (CRITICAL).
How severe is CVE-2025-49844?
This vulnerability has a CVSS 3.1 base score of 9.9, rated CRITICAL. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2025-49844?
Check the references section for vendor advisories and patches from redis. Update redis to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2025-49844?
CyberStrike's AI-powered security agents can automatically detect CVE-2025-49844 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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