CVE-2026-32201 (GCVE-0-2026-32201)

Vulnerability from cvelistv5 – Published: 2026-04-14 16:58 – Updated: 2026-04-15 17:16
VLAI? CISA KEV
Title
Microsoft SharePoint Server Spoofing Vulnerability
Summary
Improper input validation in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.
Severity ?
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:F/RL:O/RC:C
CWE
  • CWE-20 - Improper Input Validation
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft SharePoint Enterprise Server 2016 Affected: 16.0.0 , < 16.0.5548.1003 (custom)
Create a notification for this product.
Date Public ?
2026-04-14 14:00
CISA KEV
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: ed5ef331-6a92-4311-98b4-7312c0e75edb

Vulnerability ID: CVE-2026-32201

Status: Confirmed

Status Updated: 2026-04-14 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2026-04-14
Asserted: 2026-04-14
Scope
Notes: KEV entry: Microsoft SharePoint Server Improper Input Validation Vulnerability | Affected: Microsoft / SharePoint Server | Description: Microsoft SharePoint Server contains an improper input validation vulnerability that allows an unauthorized attacker to perform spoofing over a network. | 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. | Due date: 2026-04-28 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2026-32201 ; https://nvd.nist.gov/vuln/detail/CVE-2026-32201
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-20
Feed CISA Known Exploited Vulnerabilities Catalog
Product SharePoint Server
Due Date 2026-04-28
Date Added 2026-04-14
Vendorproject Microsoft
Vulnerabilityname Microsoft SharePoint Server Improper Input Validation Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-04-14 18:00 UTC | Updated: 2026-04-14 18:00 UTC
Show details on NVD website
To clipboard 

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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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