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Luu, T.J.

🔥 This vulnerability is being actively exploited in the wild (CISA Known Exploited Vulnerabilities catalog)

CVE-2026-32201: Microsoft SharePoint Server Improper Input Validation Vulnerability

infovulnerability🔥 Actively Exploited

security

Source: CISA Known Exploited VulnerabilitiesApril 13, 2026CVE-2026-32201

Summary

Microsoft SharePoint Server has a vulnerability where it doesn't properly check user input before processing it, allowing attackers to perform spoofing (impersonating someone or something else) over a network without authorization. This flaw is currently being exploited by real attackers in the wild.

Solution / Mitigation

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services (federal cybersecurity requirements for cloud systems), or discontinue use of the product if mitigations are unavailable.

Vulnerability Details

EPSS (30-day exploit probability)

EPSS: 0.0%

Patch Available

Yes

Exploit Maturity

🔥 Actively Exploited

Disclosure Date

April 13, 2026

Classification

Attack SophisticationModerate

Taxonomy References

CWE (Weakness Type)

CWE-20

Monthly digest — independent AI security research

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-32201

First tracked: April 14, 2026 at 02:00 PM

Classified by LLM (prompt v3) · confidence: 95%