Arbitrary file upload in M-Files Web Companion

CVE-2023-5524

Insufficient blacklisting in M-Files Web Companion before release version 23.10 and LTS Service Release Versions before 23.8 LTS SR1 allows Remote Code Execution via specific file types

Vulnerability class: Unrestricted File Upload

EPSS: 0.003 (23.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2023-5524?
CVE-2023-5524 is a high-severity vulnerability in M-Files Web Companion, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.2/10. Published 2023-10-20.
How severe is CVE-2023-5524?
High severity. CVSS v3 base score is 8.2 out of 10.
Is CVE-2023-5524 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.