What is CVE-2023-3405?

CVE-2023-3405 is a high-severity vulnerability in M-Files Server, classified under CWE-248. CVSS score: 7.5/10. Published 2023-06-27.

How severe is CVE-2023-3405?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2023-3405 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in M-Files Server

CVE-2023-3405

Unchecked parameter value in M-Files Server in versions before 23.6.12695.3 (excluding 23.2 SR2 and newer) allows anonymous user to cause denial of service

Published 2023-06-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.008 (56.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

M-Files Server — versions 0, 23.2.12340.11
M-Files Server

Weakness classification (CWE)

CWE-248

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

product.m-files.com/security-advisories/cve-2023-3405/ (vendor-advisory)
empower.m-files.com/security-advisories/CVE-2023-3405 (vendor-advisory)
www.m-files.com/about/trust-center/security-advisories/cve-2023-3405-denial-of-… (Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2023-3405?: CVE-2023-3405 is a high-severity vulnerability in M-Files Server, classified under CWE-248. CVSS score: 7.5/10. Published 2023-06-27.
How severe is CVE-2023-3405?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2023-3405 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.