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Vulnerabilities

Vulnerability · CVE-2026-32202

Microsoft Windows Protection Mechanism Failure Vulnerability

Published Apr 14, 2026 · catalog updated Aug 14, 2026 · Microsoft Windows

Patch now

CVE-2026-32202 is in the CISA known-exploited catalog, due May 12, 2026. Confirm Microsoft Windows against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Medium4.3
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
4.90%
Remediation
Remediation guidance
Affected products
cpe microsoft/windows 10 1607 · cpe microsoft/windows 10 1809 · cpe microsoft/windows 10 21h2 · cpe microsoft/windows 10 22h2 · vendor Microsoft Windows

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

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe microsoft/windows 10 1607version unspecified
  • cpe microsoft/windows 10 1809version unspecified
  • cpe microsoft/windows 10 21h2version unspecified
  • cpe microsoft/windows 10 22h2version unspecified
  • vendor Microsoft Windowsversion unspecified

How to fix CVE-2026-32202

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2026-32202 is in the CISA known-exploited catalog, due May 12, 2026. Confirm Microsoft Windows against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

What should an analyst verify?

CWE-693: Protection Mechanism Failure. EPSS 4.90%. The CISA KEV listing is the exploitation evidence. A public exploit reference is linked in Sources. That is not the same as confirmed exploitation. Use the source links for the original advisory.

Technology hubs

Windows security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 14, 2026 · Catalog

    Detected

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

  2. Apr 28, 2026 · CISA KEV

    Known exploited

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

  3. May 12, 2026 · CISA KEV

    Remediation due

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

  4. Aug 14, 2026 · Catalog

    Updated

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

  5. Aug 14, 2026 · NIST NVD

    Updated

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

Sources

  • CISA KEVConfirmed exploitationCVE-2026-32202

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

    cisa.gov
  • CVE.orgVulnerability recordCVE-2026-32202

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-32202

    30-day exploitation probability 4.9%

    first.org
  • Exploit DatabasePublic exploit reference52601

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • NIST NVDVulnerability recordCVE-2026-32202

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

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2026-32202

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

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.