CVE-2025-49844
Published: April 11, 2026
Official 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.
Technical Analysis
CVE-2025-49844 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2025-49844 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Exploit & PoC Resources
News & Research Mentioning CVE-2025-49844
View CSAF Summary Successful exploitation of these vulnerabilities could risk privilege escalation, which could result in remote code execution. The following versions of Schneider Electric Plant iT/Brewmaxx are affected: Plant iT/Brewmaxx 9.60_and_above (CVE-2025-49844, CVE-2025-46817, CVE-2025-46818, CVE-2025-46819) CVSS Vendor Equipment Vulnerabilities v3 9.9 Schneider Electric Schneider Electric Plant iT/Brewmaxx Use After Free, Integer Overflow or Wraparound, Improper Control of Generation of Code ('Code Injection') Background Critical Infrastructure Sectors: Energy, Critical Manufacturing, Commercial Facilities Countries/Areas Deployed: Worldwide Company Headquarters Location: France Vulnerabilities Expand All + CVE-2025-49844 The affected prod [xlite_meta score:79 src:CISA Alerts xlite_fp:f8865a59a3fcaec05a6e7b3379d6b9b78f1b08b9aadb24f82c59ab4f599a1d38]
Quick Facts
Known Threat Actors
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2025-49844 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1