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Description

Improper input validation in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.

PUBLISHED Reserved 2026-03-11 | Published 2026-04-14 | Updated 2026-05-12 | Assigner microsoft




MEDIUM: 6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:F/RL:O/RC:C

CISA Known Exploited Vulnerability

Date added 2026-04-14 | Due date 2026-04-28

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

Problem types

CWE-20: Improper Input Validation

Product status

16.0.0 (custom) before 16.0.5548.1003
affected

16.0.0 (custom) before 16.0.10417.20114
affected

16.0.0 (custom) before 16.0.19725.20210
affected

References

www.cisa.gov/...erabilities-catalog?field_cve=CVE-2026-32201 government-resource

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32201 (Microsoft SharePoint Server Spoofing Vulnerability) vendor-advisory patch

cve.org (CVE-2026-32201)

nvd.nist.gov (CVE-2026-32201)

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