CVE-2026-0663

MEDIUMNVD 4.94.9—Trending — 3 sources updated this week

4.9

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.

CVSS v3: 4.9
EG Score: 4.9(medium)
EPSS: 10.0%
KEV: Not listed

Published

January 21, 2026

Last Modified

February 23, 2026

References (2)

security@m-fileshttps://empower.m-files.com/security-advisories/CVE-2026-0663
security@m-fileshttps://product.m-files.com/security-advisories/cve-2026-0663/

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-1286

Data Freshness Timeline

(refreshed 14× in last 7d / 14× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:13 UTCepss_batch
2026-06-02 20:13 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 15:31 UTCEG score recompute
2026-05-29 15:31 UTCGHSA enrichment
2026-05-29 13:44 UTCepss_batch
2026-05-29 13:44 UTCepss_batch

Frequently asked(5)

What is CVE-2026-0663?

CVE-2026-0663 is a medium vulnerability published on January 21, 2026. 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.

When was CVE-2026-0663 disclosed?

CVE-2026-0663 was first published in the National Vulnerability Database on January 21, 2026, with the most recent update on February 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-0663 actively exploited?

CVE-2026-0663 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 10.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

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

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

How do I remediate CVE-2026-0663?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-0663, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2026-0663

📅 Published

🔄 Last Modified

🔗 References (2)