What is the CVSS score of CVE-2025-49844?

CVE-2025-49844 has a CVSS 3.1 base score of 9.9 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H. EPSS exploitation probability: 12.4%.

Is there a public PoC exploit available for CVE-2025-49844?

Yes, a public proof-of-concept exploit is available for CVE-2025-49844. Prioritise patching immediately. EPSS: 12.4%.

How to fix or mitigate CVE-2025-49844?

Within 24 hours: Identify all affected systems and apply vendor patches immediately. If patching is delayed, consider network segmentation to limit exposure.

Redis CVE-2025-49844

Q: Which versions of Redis are affected by CVE-2025-49844?

Organizations using Redis face critical risk from CVE-2025-49844, a use-after-free vulnerability rated CVSS 9.9.. A patch is available.

EUVD-2025-33178 CRITICAL

Use After Free (CWE-416)

2025-10-03 security-advisories@github.com

RCE Use After Free Memory Corruption Redis Valkey Lfprojects

9.9

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-416 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V15 - Secure Coding and Architecture Memory lifecycle management MITRE ATT&CK 2 techniques across 2 tactics: Execution, Privilege Escalation The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS 9.9, EPSS 12.4%. Redis is mission-critical infrastructure.
Exploit ScenarioDerived	Authenticated user sends crafted Lua script triggering UAF.

Act Now Prioritize within 24-48h. Why: CRITICAL severity + public POC available.

Patch available 12.4% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 13, 2026

UAF in Redis 8.2.1 via crafted Lua scripts by authenticated users. EPSS 12.4%. Patch available.

Earlier versions of this analysis (1)

v1 Mar 13, 2026 - 19:29 CVSS 9.9

Redis UAF via Lua scripts.

RemediationAI

Update Redis.

Affected VersionsENISA

Redis < 8.2.2

Affected Packages

euvd redis fix: 8.2.2

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

CWE-416 in Redis Lua scripting engine.

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Check this CVE against your own stack and servers
Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 9.9 CRITICAL

AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Ubuntu HIGH

SUSE CRITICAL

Red Hat 8.8 HIGH

Primary rating from NVD.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

PoC Detected

Mar 20, 2026 - 14:16 vuln.today

Public exploit code

Patch released

Mar 20, 2026 - 14:16 nvd

Patch available

CVE Published

Oct 03, 2025 - 20:15 nvd

CRITICAL 9.9

DescriptionNVD

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.

Executive ViewAI

Why It Matters

Organizations using Redis face critical risk from CVE-2025-49844, a use-after-free vulnerability rated CVSS 9.9. Successful exploitation could critically impact the confidentiality, integrity, and availability of affected systems. With an EPSS score of 12%, exploitation is likely in exposed deployments. A patch is available and should be applied immediately given the critical severity.

Business Impact: Severe

Compensating Controls

Apply vendor patch. If immediate patching is not feasible: (1) Enable ASLR and DEP where available; (2) Implement network segmentation; (3) Monitor for exploitation indicators.

Threat Intelligence Overview

Threat Score

5.9/10

Composite threat intelligence

EPSS Score

12.4%

Top 6% exploitable

Threat Intel

1 sources

Exploit

POC

Public exploit code exists

Data Quality

7 sources

Confidence: High

EUVD

NVD

CVE.org

EPSS CISA POC (1) Vendor

GitHub

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity CRITICAL

CISA KEV No

Public POC Yes

EPSS 12.4%

Patch available Yes

Active threat Yes

Deciding rule

CRITICAL severity + public POC available

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Out-of-Cycle

Exploitation· derived

Poc

System Exposure· derived

Open

Automatable· derived

Human Impact

Very High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +12

CVSS: +50

PoC: +20

Weaponized: 0

Threat intel: +10

Gov advisory: 0

Attack Technique

Use After Free HIGH

Use-after-free vulnerabilities occur when a program continues to access memory through a pointer after that memory has been deallocated.

Memory Corruption HIGH

Memory corruption occurs when a program writes data beyond the boundaries of allocated memory regions or accesses memory in unintended ways, violating the integrity of the process's address space.

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

More in Redis

View all

CVE-2026-48172 CRITICAL Act Now POC

10.0 May 21

Privilege escalation to root in the LiteSpeed User-End cPanel Plugin (versions 2.3 through before 2.4.5) lets attackers

CVE-2025-46817 HIGH Act Now POC

8.8 Oct 03

Authenticated Redis users with permission to run server-side Lua can trigger an integer overflow (CWE-190) in the bundle

CVE-2022-0543 CRITICAL Act Now POC

10.0 Feb 18

It was discovered, that redis, a persistent key-value database, due to a packaging issue, is prone to a (Debian-specific

CVE-2018-11218 CRITICAL Act Now POC

9.8 Jun 17

Memory Corruption was discovered in the cmsgpack library in the Lua subsystem in Redis before 3.2.12, 4.x before 4.0.10,

CVE-2015-4335 CRITICAL Act Now POC

10.0 Jun 09

Redis before 2.8.21 and 3.x before 3.0.2 allows remote attackers to execute arbitrary Lua bytecode via the eval command.

CVE-2016-8339 CRITICAL Act Now POC

9.8 Oct 28

A buffer overflow in Redis 3.2.x prior to 3.2.4 causes arbitrary code execution when a crafted command is sent. Rated cr

CVE-2025-46819 HIGH Act Now POC

7.1 Oct 03

Authenticated Lua script execution in Redis 8.2.1 and earlier can be abused with a crafted long-string delimiter to trig

CVE-2026-77602 CRITICAL Act Now POC

9.9 Sep 23

Authenticated remote code execution in OpenC3 COSMOS (Ruby gem 'openc3' versions 5.1.0 through 7.2.1) lets any logged-in

CVE-2025-46818 HIGH Act Now POC

7.3 Oct 03

CVE-2025-46818 is a sandbox-escape flaw in Redis's embedded Lua scripting engine (all versions up to and including 8.2.1

CVE-2026-27574 CRITICAL Act Now POC

9.9 Feb 21

Code injection in OneUptime monitoring via custom JS monitor using vm module. PoC and patch available.

CVE-2026-84372 CRITICAL Act Now POC

9.8 Sep 01

RESP protocol command injection in Predis, the popular PHP client for Redis and Valkey, affects versions 3.0.0-RC1 throu

CVE-2021-31649 CRITICAL Act Now POC

9.8 Jun 24

In applications using jfinal 4.9.08 and below, there is a deserialization vulnerability when using redis,may be vulnerab

Same weakness CWE-416 – Use After Free

View all

CVE-2019-0708 CRITICAL POC

9.8

CVE-2015-5119 CRITICAL POC

9.8

CVE-2014-0322 HIGH POC

8.8

CVE-2012-4792 HIGH POC

8.8

CVE-2009-4324 HIGH POC

7.8

CVE-2015-0313 CRITICAL POC

9.8

CVE-2015-5122 CRITICAL POC

9.8

CVE-2013-2551 HIGH POC

8.8

Same technique RCE

View all

CVE-2021-44228 CRITICAL POC

10.0

CVE-2017-7269 CRITICAL POC

9.8

CVE-2022-47966 CRITICAL POC

9.8

CVE-2012-4681 CRITICAL POC

9.8

CVE-2023-3519 CRITICAL POC

9.8

CVE-2016-4117 CRITICAL POC

9.8

CVE-2015-3113 CRITICAL POC

9.8

Vendor StatusVendor

Ubuntu

Priority: High

redict

Release	Status	Version
jammy	DNE	-
noble	DNE	-
upstream	needs-triage	-
plucky	released	7.3.2+ds-1ubuntu0.1
questing	released	7.3.5+ds-1ubuntu0.1

redis

Release	Status	Version
bionic	released	5:4.0.9-1ubuntu0.2+esm6
focal	released	5:5.0.7-2ubuntu0.1+esm4
jammy	released	5:6.0.16-1ubuntu1.1
upstream	released	8.2.2
noble	released	5:7.0.15-1ubuntu0.24.04.2
plucky	released	5:7.0.15-3ubuntu0.1
questing	released	5:8.0.2-3ubuntu0.25.10.1
trusty	released	2:2.8.4-2ubuntu0.2+esm5
xenial	released	2:3.0.6-1ubuntu0.4+esm4

valkey

Release	Status	Version
jammy	DNE	-
upstream	needs-triage	-
noble	released	7.2.11+dfsg1-0ubuntu0.2
questing	released	8.1.4+dfsg1-0ubuntu0.2
plucky	released	8.0.6+dfsg1-0ubuntu0.2

USN-7824-1 USN-7824-2 USN-7824-3 USN-7893-1

Debian

Bug #1117690

redict

Release	Status	Fixed Version	Urgency
forky, sid	fixed	7.3.6+ds-1	-
(unstable)	fixed	7.3.6+ds-1	-

redis

Release	Status	Fixed Version	Urgency
bullseye	fixed	5:6.0.16-1+deb11u8	-
bullseye (security)	fixed	5:6.0.16-1+deb11u8	-
bookworm, bookworm (security)	fixed	5:7.0.15-1~deb12u6	-
trixie (security), trixie	fixed	5:8.0.2-3+deb13u1	-
forky, sid	fixed	5:8.0.5-1	-
bookworm	fixed	5:7.0.15-1~deb12u6	-
trixie	fixed	5:8.0.2-3+deb13u1	-
(unstable)	fixed	5:8.0.4-1	-

valkey

Release	Status	Fixed Version	Urgency
trixie (security), trixie	fixed	8.1.1+dfsg1-3+deb13u1	-
forky, sid	fixed	8.1.4+dfsg1-1	-
trixie	fixed	8.1.1+dfsg1-3+deb13u1	-
(unstable)	fixed	8.1.4+dfsg1-1	-

DLA-4325-1 DSA-6020-1 DSA-6022-1

SUSE

Severity: Critical

Product	Status
Image SL-Micro-Azure Image SL-Micro-BYOS-Azure Image SL-Micro-BYOS-EC2 Image SL-Micro-BYOS-GCE Image SL-Micro-EC2 Image SLE-Micro Image SLE-Micro-Azure Image SLE-Micro-BYOS Image SLE-Micro-BYOS-Azure Image SLE-Micro-BYOS-EC2 Image SLE-Micro-BYOS-GCE Image SLE-Micro-EC2 Image SLE-Micro-GCE Image SUSE-Multi-Linux-Manager-Proxy-BYOS-Azure Image SUSE-Multi-Linux-Manager-Proxy-BYOS-EC2 Image SUSE-Multi-Linux-Manager-Proxy-BYOS-GCE Image SUSE-Multi-Linux-Manager-Server-Azure-llc Image SUSE-Multi-Linux-Manager-Server-Azure-ltd Image SUSE-Multi-Linux-Manager-Server-BYOS-Azure Image SUSE-Multi-Linux-Manager-Server-BYOS-EC2 Image SUSE-Multi-Linux-Manager-Server-BYOS-GCE Image SUSE-Multi-Linux-Manager-Server-EC2-llc Image SUSE-Multi-Linux-Manager-Server-EC2-ltd	Affected
SUSE Enterprise Storage 7.1	Fixed
SUSE Liberty Linux 8	Fixed
SUSE Liberty Linux 9	Fixed
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS	Fixed

Threat IntelligenceMISP

CISA Advisories

ICSA-26-083-03

Sources: CISA (public domain), Metasploit/Nuclei

References

Advisories & patches

Search Externally

GitHub PoC

Exploit-DB PacketStorm Snyk Rapid7 Nuclei Templates Trickest PoC

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