Improper input validation in Microsoft Sharepoint Enterprise Server 2016
CVE-2026-32201
Improper input validation in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.434 (98.7th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 99th percentile — 98.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.434 · newest: 0.434 · change: 0.000
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)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Public proof-of-concept exploits
References
- Microsoft SharePoint Server Spoofing Vulnerability (vendor-advisory, patch, Vendor Advisory)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource, Third Party Advisory)
Frequently asked questions
- What is CVE-2026-32201?
- CVE-2026-32201 is a medium-severity vulnerability in Microsoft Sharepoint Enterprise Server 2016, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2026-04-14.
- How severe is CVE-2026-32201?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2026-32201 known to be exploited?
- Yes. CVE-2026-32201 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-04-14), indicating it is being actively exploited. 1 public proof-of-concept repositories are indexed.