Critical severity · published Oct 3, 2025
CVE-2025-49844
Redis is an open source, in-memory database that persists on disk
9.9
CVSS
82.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)82.6% · higher than 100% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RE
Redis · Redis
before 6.2.20; 7.0 before 7.2.11; 7.4.0 before 7.4.6; 8.0.0 before 8.0.4; 8.2.0 before 8.2.2 · source: NVD
VA
Valkey · Lfprojects
before 7.2.11; 8.0.0 before 8.0.6; 8.1.0 before 8.1.4 · source: NVD
In the news
VulnerabilityCritical
Schneider Electric Plant iT/Brewmaxx
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 product uses Redis, an open-source, in-memory database. 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. View CVE Details Affected Products Schneider Electric Plant iT/Brewmaxx Vendor: Schneider Electric Product Version: Schneider Electric Plant iT/Brewmaxx: 9.60_and_above Product Status: known_affected Remediations Mitigation Schneider Electric recommends users immediately apply the following mitigations to reduce the risk of exploit: Mitigation Install P...
Mar 24, 2026·CISA Advisories