CVE-2025-46819

MEDIUM NUCLEI

Redis < 6.2.20 - Authenticated Denial of Service via Lua Script

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2025-46819 has a Nuclei detection template available — see the Nuclei card below for the Shodan/FOFA recon queries.

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 read out-of-bound data or crash the server and subsequent denial of service. 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 block a script by restricting both the EVAL and FUNCTION command families.

Nuclei Templates (1)

Redis < 8.2.1 Lua Long-String Delimiter - Out-of-Bounds Read
HIGHVERIFIEDby pussycat0x
Shodan: product:"redis"

Scores

CVSS v3 6.3
EPSS 0.0783
EPSS Percentile 92.2%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-190 CWE-125
Status published
Products (1)
redis/redis < 6.2.20
Published Oct 03, 2025
Tracked Since Feb 18, 2026