Vulnerability in M-Files Server
CVE-2026-0663
Denial-of-service vulnerability in M-Files Server versions before 26.1.15632.3 allows an authenticated attacker with vault administrator privileges to crash the M-Files Server process by calling a vulnerable API endpoint.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (33.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 33.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
- M-Files Server
- M-Files Corporation Server — versions 0
Weakness classification (CWE)
References
- product.m-files.com/security-advisories/cve-2026-0663/ (vendor-advisory, Broken Link, Vendor Advisory)
- empower.m-files.com/security-advisories/CVE-2026-0663 (vendor-advisory)
Frequently asked questions
- What is CVE-2026-0663?
- CVE-2026-0663 is a medium-severity vulnerability in M-Files Server, classified under CWE-1286. CVSS score: 4.9/10. Published 2026-01-21.
- How severe is CVE-2026-0663?
- Medium severity. CVSS v3 base score is 4.9 out of 10.