Is CVE-2026-32201 in the CISA KEV catalog?

Yes. CVE-2026-32201 is on the CISA Known Exploited Vulnerabilities list, added 2026-04-14.

What is the CVSS severity of CVE-2026-32201?

CVE-2026-32201 has a CVSS v3 base score of 6.5 (Important).

What is the EPSS score for CVE-2026-32201?

CVE-2026-32201 has an EPSS score of 21.48% (97th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-32201?

Install KB5002861 for Microsoft SharePoint Enterprise Server 2016. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2026-32201

HIGHCISA KEVEPSS 97th pctl

6.5

CVSS v3

NVD

Description

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

CWE-20Improper Input Validation

How to fix

Remediation Available

Microsoft SharePoint Enterprise Server 2016Microsoft

Install:KB5002861Microsoft

Microsoft SharePoint Server 2019Microsoft

Install:KB5002854Microsoft

Microsoft SharePoint Server Subscription EditionMicrosoft

Install:KB5002853Microsoft

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

21.48%probability of exploitation in 30 days

97thpercentile

Very high risk: more likely to be exploited than 97% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Microsoft SharePoint Server Improper Input Validation Vulnerability

Microsoft SharePoint Server contains an improper input validation vulnerability that allows an unauthorized attacker to perform spoofing over a network.

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

Remediation due: 2026-04-28

References

Vendor Advisory1

msrc.microsoft.com

Third-Party Advisory1

cisa.gov

Related Vulnerabilities

Other CWE-20 (Improper Input Validation) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-3400	Critical	10.0	100%	KEV + Ransom	-
CVE-2021-45105	Medium	5.9	100%	-	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2021-21985	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2018-7600	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2020-3452	High	7.5	100%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-28.