What is CVE-2025-59228?

CVE-2025-59228 is a high-severity vulnerability in Microsoft Sharepoint Enterprise Server 2016, classified under Improper Input Validation. CVSS score: 8.8/10. Published 2025-10-14.

How severe is CVE-2025-59228?

High severity. CVSS v3 base score is 8.8 out of 10.

Improper input validation in Microsoft Sharepoint Enterprise Server 2016

CVE-2025-59228

Improper input validation in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.013 (66.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Microsoft Sharepoint Enterprise Server 2016 — versions 16.0.0
Microsoft Sharepoint Server 2019 — versions 16.0.0
Microsoft Sharepoint Server Subscription Edition — versions 16.0.0
Microsoft Sharepoint_server — versions 2016, 2019

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

secure@microsoft.com (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2025-59228?: CVE-2025-59228 is a high-severity vulnerability in Microsoft Sharepoint Enterprise Server 2016, classified under Improper Input Validation. CVSS score: 8.8/10. Published 2025-10-14.
How severe is CVE-2025-59228?: High severity. CVSS v3 base score is 8.8 out of 10.