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CVE-2026-32202

Microsoft Windows Protection Mechanism Failure

4.3 MEDIUMActively exploited (CISA KEV)EPSS 4.90%
  1. Published14 Apr 2026
  2. Added to CISA KEV28 Apr 2026
  3. Remediation due12 May 2026
Actively exploited (CISA KEV)

Microsoft Windows Shell contains a protection mechanism failure vulnerability that allows an unauthorized attacker to perform spoofing over a network.

Added to KEV: 28 Apr 2026Federal remediation due: 12 May 2026

Description

Protection mechanism failure in Windows Shell allows an unauthorized attacker to perform spoofing over a network.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
ConfidentialityLow
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Affected products

Microsoft Windows 10 1607< 10.0.14393.9060
Microsoft Windows 10 1809< 10.0.17763.8644
Microsoft Windows 10 21h2< 10.0.19044.7184
Microsoft Windows 10 22h2< 10.0.19045.7184
Microsoft Windows 11 23h2< 10.0.22631.6936
Microsoft Windows 11 24h2< 10.0.26100.8246
Microsoft Windows 11 25h2< 10.0.26200.8246
Microsoft Windows 11 26h1< 10.0.28000.1836
Microsoft Windows Server 2012r2
Microsoft Windows Server 2016< 10.0.14393.9060
Microsoft Windows Server 2019< 10.0.17763.8644
Microsoft Windows Server 2022< 10.0.20348.5020
Microsoft Windows Server 2022 23h2< 10.0.25398.2274
Microsoft Windows Server 2025< 10.0.26100.32690

Remediation

Fixed in
Microsoft Windows 10 1607≥ 10.0.14393.9060
Microsoft Windows 10 1809≥ 10.0.17763.8644
Microsoft Windows 10 21h2≥ 10.0.19044.7184
Microsoft Windows 10 22h2≥ 10.0.19045.7184
Microsoft Windows 11 23h2≥ 10.0.22631.6936
Microsoft Windows 11 24h2≥ 10.0.26100.8246
Microsoft Windows 11 25h2≥ 10.0.26200.8246
Microsoft Windows 11 26h1≥ 10.0.28000.1836
Microsoft Windows Server 2016≥ 10.0.14393.9060
Microsoft Windows Server 2019≥ 10.0.17763.8644

References

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Frequently asked

Is CVE-2026-32202 being actively exploited?

Yes. CVE-2026-32202 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 28 Apr 2026.

How severe is CVE-2026-32202?

CVE-2026-32202 has a CVSS 3.1 base score of 4.3, rated medium. EPSS estimates a 4.90% probability of exploitation.

Which products are affected by CVE-2026-32202?

Affected products include Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows 10 21h2, Microsoft Windows 10 22h2, Microsoft Windows 11 23h2, and 9 more.

How do I fix CVE-2026-32202?

Upgrade affected software to a fixed version, for example Microsoft Windows 10 1607 10.0.14393.9060, Microsoft Windows 10 1809 10.0.17763.8644, Microsoft Windows 10 21h2 10.0.19044.7184 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-32202 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, a risk for it never ranks below high, and the update that fixes it moves to the Emergency patch lane. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.