Is CVE-2026-0663 in the CISA KEV catalog?

No. CVE-2026-0663 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-0663?

CVE-2026-0663 has a CVSS v3 base score of 4.9 (MEDIUM).

What is the EPSS score for CVE-2026-0663?

CVE-2026-0663 has an EPSS score of 0.37% (29th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-0663?

Upgrade m-files server to 26.1.15632.3 or later.

CVE & CISA-KEV Catalog

CVE-2026-0663

MEDIUM

4.9

CVSS v3

NVD

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.

CWE-1286

How to fix

Remediation Available

m-files serverNVD

Affected:< 26.1.15632.3Fixed in:26.1.15632.3CVE-2026-0663derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredHigh

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.37%probability of exploitation in 30 days

29thpercentile

Low risk: more likely to be exploited than 29% of all known CVEs.

References

Vendor Advisory1

product.m-files.com

Other references1

empower.m-files.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-02-23.