Vulnerability · Published Jan 21, 2026 · Assigned by M-Files Corporation
CVE-2026-0663Denial of Service condition in M-Files Server
Medium 6.9
In plain English
A medium-severity security flaw in M-Files Server from M-Files Corporation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities).
Severity (CVSS 4.0)6.9Medium
Exploit odds (30 days)0.4%top 64.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| M-Files Corporation | M-Files Server | 0 – before 26.1.15632.3 |
Weakness: CWE-1286 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
References
- https://product.m-files.com/security-advisories/cve-2026-0663/ vendor-advisory
- https://empower.m-files.com/security-advisories/CVE-2026-0663 vendor-advisory