Known exploited vulnerability
CVE-2026-32201
The short answer
CVE-2026-32201 affects Microsoft Microsoft SharePoint Enterprise Server 2016 and is rated medium (CVSS 6.5). CISA added it to the Known Exploited Vulnerabilities catalog on 2026-04-14: attackers are using it, so patch it first.
What it is
Improper input validation in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.
Weakness: CWE-20.
Severity
6.5 medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Exploited (CISA KEV)
Yes, since Apr 14, 2026
Federal due date Apr 28, 2026
EPSS, next 30 days
43%
Higher than 99% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- Low
- Integrity impact
- Low
- Availability impact
- None
What CISA says to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Affected products
Microsoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, Microsoft SharePoint Server Subscription Edition. NVD's record lists the exact affected versions.
References
- msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32201 Vendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-32201 Third Party AdvisoryUS Government Resource
Questions
Is CVE-2026-32201 being exploited?
Yes. CISA added CVE-2026-32201 to its Known Exploited Vulnerabilities catalog on 2026-04-14, with a federal remediation due date of 2026-04-28.
How do I fix CVE-2026-32201?
CISA's 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.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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