CVE-2026-32202KEV · OVERDUECWE-693

Microsoft Windows Protection Mechanism Failure Vulnerability

Medium · published April 14, 2026

Patch now

The score understates this — it's already being exploited

CVSS calls it medium at 4.3. It is confirmed in active exploitation. It sits in the 92.1th percentile for exploit probability.

165
days past CISA
deadline
CVSS v3.1
4.3
EPSS
5%
Percentile
92.1
In the wild
Confirmed
What it is

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

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.04902 · 92.1th percentile
Weakness
CWE-693 · Protection Mechanism Failure
Published
2026-04-14T22:17Z
KEV added
2026-04-28 · due 2026-05-12
Affected products (25)
ProductVersionsFixed in
microsoft/windows_10_1607< 10.0.14393.906010.0.14393.9060
microsoft/windows_10_1607< 10.0.14393.906010.0.14393.9060
microsoft/windows_10_1809< 10.0.17763.864410.0.17763.8644
microsoft/windows_10_1809< 10.0.17763.864410.0.17763.8644
microsoft/windows_10_21h2< 10.0.19044.718410.0.19044.7184
microsoft/windows_10_21h2< 10.0.19044.718410.0.19044.7184
microsoft/windows_10_21h2< 10.0.19044.718410.0.19044.7184
microsoft/windows_10_22h2< 10.0.19045.718410.0.19045.7184
microsoft/windows_10_22h2< 10.0.19045.718410.0.19045.7184
microsoft/windows_10_22h2< 10.0.19045.718410.0.19045.7184
microsoft/windows_11_23h2< 10.0.22631.693610.0.22631.6936
microsoft/windows_11_23h2< 10.0.22631.693610.0.22631.6936
microsoft/windows_11_24h2< 10.0.26100.824610.0.26100.8246
microsoft/windows_11_24h2< 10.0.26100.824610.0.26100.8246
microsoft/windows_11_25h2< 10.0.26200.824610.0.26200.8246
microsoft/windows_11_25h2< 10.0.26200.824610.0.26200.8246
microsoft/windows_11_26h1< 10.0.28000.183610.0.28000.1836
microsoft/windows_11_26h1< 10.0.28000.183610.0.28000.1836
microsoft/windows_server_2012all versions—
microsoft/windows_server_2012all versions—
microsoft/windows_server_2016< 10.0.14393.906010.0.14393.9060
microsoft/windows_server_2019< 10.0.17763.864410.0.17763.8644
microsoft/windows_server_2022< 10.0.20348.502010.0.20348.5020
microsoft/windows_server_2022_23h2< 10.0.25398.227410.0.25398.2274
microsoft/windows_server_2025< 10.0.26100.3269010.0.26100.32690
References (4)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32202 · [email protected]https://www.vicarius.io/vsociety/posts/cve-2026-32202-detection-script-spoofing-vulnerability-in-windows-shell · af854a3a-2127-422b-91ae-364da2661108https://www.vicarius.io/vsociety/posts/cve-2026-32202-mitigation-script-spoofing-vulnerability-in-windows-shell · af854a3a-2127-422b-91ae-364da2661108https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-32202 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 25 SEP 03:25Z
    EPSS moved 64% → 5%
    epss
  • 28 APR 00:00Z
    Added to CISA KEV — remediate by May 12
    kev
  • 14 APR 16:57Z
    Windows Shell Spoofing Vulnerability
    cvelistv5