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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Send crafted network content
  2. Delivery
    User interacts with shell
  3. Exploit
    Validation mechanism fails
  4. Execution
    Spoofed identity accepted
  5. Impact
    Information disclosure or trust abuse

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V15 - Secure Coding and Architecture Protection mechanism completeness
Impact

This vulnerability presents a moderate real-world risk despite its low CVSS score. The CVSS vector (AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N) indicates an unauthenticated, low-complexity remote attack requiring user interaction with limited confidentiality impact but no integrity or availability impact. The low EPSS probability and absent KEV status suggest minimal active exploitation likelihood. However, the spoofing nature of the vulnerability and universal presence across Windows SKUs (desktop and server) means it could affect credential harvesting, phishing, or trust-based attacks. The availability of vendor patches and user interaction requirement mitigate urgency, making this a standard-priority remediation rather than a critical incident. Organizations should prioritize based on exposure to untrusted networks rather than threat severity alone.

Exploit ScenarioDerived

An attacker crafts malicious content (such as specially formatted files, network resources, or shortcuts) that exploits the shell's failed validation mechanisms. When a user interacts with this content through Windows Explorer or related shell interfaces-such as browsing a network share, opening a downloaded file, or previewing content-the shell fails to properly validate the authenticity or source of the item. The attacker successfully spoofs the identity or source of the content, potentially deceiving the user into trusting malicious material or revealing information based on the false representation. No public exploit code has been identified; exploitation relies on social engineering combined with the underlying shell vulnerability.

Act Now Prioritize within 24-48h. Why: In CISA KEV with patch available.
Exploited in the wild (CISA KEV) Patch available 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Apr 14, 2026

Windows Shell protection mechanism failure (CVE-2026-32202) allows remote attackers to perform spoofing attacks over a network without authentication, requiring only user interaction. This low-severity vulnerability affects multiple Windows versions from Windows 10 1607 through Windows 11 26H1 and Windows Server 2012 through 2025. While not actively exploited in the wild, vendor patches are available across all affected versions, and the low CVSS score (4.3) reflects limited confidentiality impact and no availability impact despite the network-accessible attack vector.

RemediationAI

Vendor-released patch available per Microsoft Security Response Center. Organizations should apply Windows updates containing the cumulative security patches for their respective OS versions, using the build numbers specified in the EUVD data as minimum patched versions (for example, Windows 10 Version 22H2 requires 10.0.19045.7184 or later). Updates can be deployed via Windows Update, WSUS, or manual patch installation from the Microsoft Update Catalog. For organizations unable to patch immediately, restrict network access to untrusted sources and educate users to avoid interacting with suspicious shell content or file operations from unknown origins. Consult https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32202 for specific patch delivery timelines and https://vuldb.com/vuln/357515 for additional mitigation context.

Affected VersionsENISA

Windows Server 2016 10.0.14393.0 <10.0.14393.9060
Windows 10 Version 1809 10.0.17763.0 <10.0.17763.8644
Windows Server 2012 R2 6.3.9600.0 <6.3.9600.23132
Windows 11 version 26H1 10.0.28000.0 <10.0.28000.1836
Windows 10 Version 1607 10.0.14393.0 <10.0.14393.9060
Windows Server 2019 10.0.17763.0 <10.0.17763.8644
Windows 11 Version 23H2 10.0.22631.0 <10.0.22631.6936
Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.0 <10.0.25398.2274
Windows Server 2012 6.2.9200.0 <6.2.9200.26026
Windows 10 Version 21H2 10.0.19044.0 <10.0.19044.7184
Windows 11 Version 25H2 10.0.26200.0 <10.0.26200.8246
Windows 11 Version 24H2 10.0.26100.0 <10.0.26100.32690
Windows Server 2019 (Server Core installation) 10.0.17763.0 <10.0.17763.8644
Windows 10 Version 22H2 10.0.19045.0 <10.0.19045.7184
Windows Server 2025 (Server Core installation) 10.0.26100.0 <10.0.26100.32690
Windows Server 2016 (Server Core installation) 10.0.14393.0 <10.0.14393.9060
Windows 11 version 22H3 10.0.22631.0 <10.0.22631.6936
Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 <6.3.9600.23132
Windows Server 2025 10.0.26100.0 <10.0.26100.32690
Windows Server 2022 10.0.20348.0 <10.0.20348.5020
Windows Server 2012 (Server Core installation) 6.2.9200.0 <6.2.9200.26026

Affected Packages

microsoft windows_10_version_1607_10_0_14393_9060 fix: Windows 10 Version 1607 for 32-bit Systems 10.0.14393.9060, Windows 10 Version 1607 for x64-based Systems 10.0.14393.9060
microsoft windows_10_version_1809_10_0_17763_8644 fix: Windows 10 Version 1809 for 32-bit Systems 10.0.17763.8644, Windows 10 Version 1809 for x64-based Systems 10.0.17763.8644
microsoft windows_10_version_21h2_10_0_19044_7184 fix: Windows 10 Version 21H2 for 32-bit Systems 10.0.19044.7184, Windows 10 Version 21H2 for ARM64-based Systems 10.0.19044.7184, Windows 10 Version 21H2 for x64-based Systems 10.0.19044.7184
microsoft windows_10_version_22h2_10_0_19045_7184 fix: Windows 10 Version 22H2 for 32-bit Systems 10.0.19045.7184, Windows 10 Version 22H2 for ARM64-based Systems 10.0.19045.7184, Windows 10 Version 22H2 for x64-based Systems 10.0.19045.7184
microsoft windows_11_version_23h2_10_0_22631_6936 fix: Windows 11 Version 23H2 for ARM64-based Systems 10.0.22631.6936, Windows 11 Version 23H2 for x64-based Systems 10.0.22631.6936
microsoft windows_11_version_24h2_10_0_26100_32690 fix: Windows 11 Version 24H2 for ARM64-based Systems 10.0.26100.32690, Windows 11 Version 24H2 for x64-based Systems 10.0.26100.32690
microsoft windows_11_version_25h2_10_0_26200_8246 fix: Windows 11 Version 25H2 for ARM systems 10.0.26200.8246, Windows 11 Version 25H2 for x64-based Systems 10.0.26200.8246
microsoft windows_11_version_26h1_10_0_28000_1836 fix: Windows 11 Version 26H1 for ARM64-based Systems 10.0.28000.1836, Windows 11 version 26H1 for x64-based Systems 10.0.28000.1836
microsoft windows_server_2012_6_2_9200_26026 fix: Windows Server 2012 6.2.9200.26026, Windows Server 2012 (Server Core installation) 6.2.9200.26026
microsoft windows_server_2012_r2_6_3_9600_23132 fix: Windows Server 2012 R2 6.3.9600.23132, Windows Server 2012 R2 (Server Core installation) 6.3.9600.23132
microsoft windows_server_2016_10_0_14393_9060 fix: Windows Server 2016 10.0.14393.9060, Windows Server 2016 (Server Core installation) 10.0.14393.9060
microsoft windows_server_2019_10_0_17763_8644 fix: Windows Server 2019 10.0.17763.8644, Windows Server 2019 (Server Core installation) 10.0.17763.8644
microsoft windows_server_2022_10_0_20348_5020 fix: Windows Server 2022 10.0.20348.5020, Windows Server 2022 (Server Core installation) 10.0.20348.5020
microsoft windows_server_2022_23h2_edition_10_0_25398_2274 fix: Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.2274
microsoft windows_server_2025_10_0_26100_32690 fix: Windows Server 2025 10.0.26100.32690, Windows Server 2025 (Server Core installation) 10.0.26100.32690
euvd windows_10_version_1607 fix: 10.0.14393.9060
euvd windows_10_version_1809 fix: 10.0.17763.8644
euvd windows_10_version_21h2 fix: 10.0.19044.7184
euvd windows_10_version_22h2 fix: 10.0.19045.7184
euvd windows_11_version_22h3 fix: 10.0.22631.6936
euvd windows_11_version_23h2 fix: 10.0.22631.6936
euvd windows_11_version_24h2 fix: 10.0.26100.32690
euvd windows_11_version_25h2 fix: 10.0.26200.8246
euvd windows_11_version_26h1 fix: 10.0.28000.1836
euvd windows_server_2012 fix: 6.2.9200.26026
euvd windows_server_2012_r2 fix: 6.3.9600.23132
euvd windows_server_2012_r2_server_core_installation fix: 6.3.9600.23132
euvd windows_server_2012_server_core_installation fix: 6.2.9200.26026
euvd windows_server_2016 fix: 10.0.14393.9060
euvd windows_server_2016_server_core_installation fix: 10.0.14393.9060
euvd windows_server_2019 fix: 10.0.17763.8644
euvd windows_server_2019_server_core_installation fix: 10.0.17763.8644
euvd windows_server_2022 fix: 10.0.20348.5020
euvd windows_server_2022_23h2_edition_server_core_installation fix: 10.0.25398.2274
euvd windows_server_2025 fix: 10.0.26100.32690
euvd windows_server_2025_server_core_installation fix: 10.0.26100.32690

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 36 packages in microsoft, euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The vulnerability resides in Windows Shell's protection mechanisms, specifically a failure in how the shell validates or enforces security boundaries (CWE-693: Protection Mechanism Failure). Windows Shell is the core user interface component responsible for file browsing, application launching, and user-system interactions. The spoofing capability suggests an attacker can impersonate or misrepresent content through the shell interface. The network attack vector combined with user interaction requirement indicates the attack likely involves crafted network content or specially formed inputs that deceive the shell's trust mechanisms. The root cause classification under CWE-693 indicates the security control itself is flawed rather than bypassed through a traditional code execution pathway.

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Severity by source

Vendor (microsoft) PRIMARY 4.3 MEDIUM
AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
CIRCL (temporal) 3.8 LOW

Primary rating from Vendor (microsoft).

CVSS VectorVendor: microsoft

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

Lifecycle Timeline

5
Added to CISA KEV
Apr 28, 2026 - 21:47 cisa
CISA KEV
PoC Detected
Apr 28, 2026 - 21:47 vuln.today
Public exploit code
Added to CISA KEV
Apr 28, 2026 - 17:32 CISA
Patch released
Apr 14, 2026 - 17:46 nvd
Patch available
CVE Published
Apr 14, 2026 - 16:57 nvd
MEDIUM 4.3

DescriptionCVE.org

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

Threat Intelligence Overview

EPSS Score
0.1%
Top 81% exploitable
EUVD KEV
Listed
EU Exploited Vulnerability
Vendor Action
See Below
Required. The vulnerability documented by this CVE requires customer action to resolve.
Vendor Status
Publicly Disclosed:No
Exploited:No
Latest Software Release:Exploitation More Likely
Exploit
POC
Public exploit code exists
Data Quality
10 sources
Confidence: High
EUVD NVD CVE.org CISA KEV EPSS Vulnrichment CIRCL Exploit-DB GitHub VulDB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV Yes
Public POC Yes
EPSS 0.1%
Patch available Yes
Active threat Yes
Deciding rule
In CISA KEV with patch available
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact· derived
High
Technical Impact
Partial

Priority Score

92
Low Medium High Critical
KEV: +50
EPSS: 0
CVSS: +22
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

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