What is the CVSS score of CVE-2024-4056?

CVE-2024-4056 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.8%.

M Files Server CVE-2024-4056

HIGH

Inefficient Regular Expression Complexity (ReDoS) (CWE-1333)

2024-04-26 security@m-files.com

Denial Of Service M Files Server M Files

7.5

CVSS 3.1 · Vendor: m-files

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Vulnerability Assessment

Weakness	CWE CWE-1333 ASVS 5.0 V2 - Validation and Business Logic Regex complexity limits MITRE ATT&CK 1 technique across 1 tactic: Impact 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 score of 7.5 (HIGH). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required.
Exploit ScenarioDerived	This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the high-severity affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

No patch listed yet 0.8% exploitation probability (EPSS)

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AnalysisAI

Denial of service condition in M-Files Server in versions before 24.4.13592.4 and after 23.11 (excluding 24.2 LTS) allows unauthenticated user to consume computing resources. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

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

Technical ContextAI · show details

This vulnerability is classified under CWE-1333. Denial of service condition in M-Files Server in versions before 24.4.13592.4 and after 23.11 (excluding 24.2 LTS) allows unauthenticated user to consume computing resources. Affected products include: M-Files M-Files Server. Version information: before 24.4.13592.4.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (m-files) PRIMARY 7.5 HIGH

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

Primary rating from Vendor (m-files) · only source for this CVE.

CVSS VectorVendor: m-files

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

DescriptionCVE.org

Denial of service condition in M-Files Server in versions before 24.4.13592.4 and after 23.11 (excluding 24.2 LTS) allows unauthenticated user to consume computing resources.

Threat Intelligence Overview

EPSS Score

0.8%

Top 48% exploitable

Data Quality

2 sources

Confidence: Low

NVD

CVE.org

EPSS

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 HIGH

CISA KEV No

Public POC No

EPSS 0.8%

Patch available No

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

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

Scheduled

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Yes

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +1

CVSS: +38

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Denial of Service MEDIUM

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Affected Products (CPE)CVE.org

cpe:2.3:a:m-files:m-files_server:*:*:*:*:*:*:*:*

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Authentication bypass condition in LDAP authentication in M-Files server versions before 24.11 supported usage of OpenLD

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User-controlled operations could have allowed Denial of Service in M-Files Server before 23.4.12528.1 due to uncontrolle

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Insertion of Sensitive Information into Log Files in M-Files Server before 22.10.11846.0 could allow to obtain sensitive

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Denial of service in M-Files Server versions prior to 26.5.16015.0, 26.2 LTS, and 25.8 LTS SR3 allows an authenticated r

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Denial-of-service condition in M-Files Server versions before 25.11.15392.1, before 25.2 LTS SR2 and before 25.8 LTS SR2

Same weakness CWE-1333 – Inefficient Regular Expression Complexity (ReDoS)

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CVE-2023-29487 CRITICAL POC

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CVE-2026-116693 HIGH POC

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CVE-2026-48801 HIGH POC

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CVE-2026-57584 HIGH POC

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CVE-2024-58340 HIGH POC

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CVE-2026-0621 HIGH POC

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CVE-2026-118686 HIGH POC

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Same technique Denial Of Service

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CVE-2015-5119 CRITICAL POC

9.8

CVE-2011-2462 CRITICAL POC

9.8

CVE-2011-0611 HIGH POC

8.8

CVE-2012-1889 HIGH POC

8.8

CVE-2012-0507 CRITICAL POC

9.8

CVE-2014-1761 HIGH POC

7.8

CVE-2015-5122 CRITICAL POC

9.8

CVE-2011-0609 HIGH POC

7.8

References

Advisories & patches

ADVISORY https://product.m-files.com/security-advisories/cve-2024-4056/ ADVISORY https://www.m-files.com/about/trust-center/security-advisories/cve-2024-4056/ REF https://empower.m-files.com/security-advisories/CVE-2024-4056

Search Externally

GitHub PoC

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