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Vulnerability record · CVE-2021-41807 · published 18 January 2022

CVE-2021-41807: M-files server improper restriction of authentication attempts vulnerability

M Files · M Files Server

Lack of rate limiting in M-Files Server and M-Files Web products with versions before 21.12.10873.0 in certain type of user accounts allows unlimited amount of attempts and therefore makes brute-forcing login accounts easier.

9.8 CVSS 3.1 Critical EPSS 1.1% · top 35.5% CWE-307 · Improper restriction of authentication attempts
9.8CVSS 3.1 base score, v2 5.0
1.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

Description

Lack of rate limiting in M-Files Server and M-Files Web products with versions before 21.12.10873.0 in certain type of user accounts allows unlimited amount of attempts and therefore makes brute-forcing login accounts easier.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://empower.m-files.com/security-advisories/CVE-2021-41807
https://www.m-files.com/about/trust-center/security-vulnerabilities/cve-2021-41807/ Broken LinkVendor Advisory
https://www.m-files.com/about/trust-center/security-vulnerabilities/cve-2021-41807/ Broken LinkVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2023-6912M-files server improper restriction of authentication attempts vulnerabilityLack of protection against brute force attacks in M-Files Server before 23.12.13205.0 allows an attacker unlimited authentication attempts, potential…EPSS 0.98%9.2CVE-2024-10127M-files server vulnerabilityAuthentication bypass condition in LDAP authentication in M-Files server versions before 24.11 supported usage of OpenLDAP configurations that allowe…EPSS 0.61%8.8CVE-2023-6239M-files server vulnerabilityUnder rare conditions, the effective permissions of an object might be incorrectly calculated if the object has a specific configuration of metadata-…EPSS 0.57%8.4CVE-2025-5964M-files server path traversal vulnerabilityA path traversal issue in the API endpoint in M-Files Server before version 25.6.14925.0 allows an authenticated user to read files in the server.EPSS 13%8.4CVE-2024-6789M-files server path traversal vulnerabilityA path traversal issue in API endpoint in M-Files Server before version 24.8.13981.0 and LTS 24.2.13421.15 SR2 and LTS 23.8.12892.0 SR6 allows authen…EPSS 0.56%7.8CVE-2023-2112M-files server improper access control vulnerabilityDesktop component service allows lateral movement between sessions in M-Files before 23.4.12455.0.EPSS 0.18%7.6CVE-2022-4862M-files server information exposure vulnerabilityRendering of HTML provided by another authenticated user is possible in browser on M-Files Web before 22.12.12140.3. This allows the content to steal…EPSS 0.36%7.5CVE-2024-4056M-files server inefficient regular expression (redos) vulnerabilityDenial 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 con…EPSS 0.77%

Source: NIST National Vulnerability Database (record CVE-2021-41807), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.