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{"cveTags": [], "descriptions": [{"lang": "en", "value": "Protection mechanism failure in Windows Shell allows an unauthorized attacker to perform spoofing over a network."}], "id": "CVE-2026-32202", "lastModified": "2026-04-14T18:17:27.360", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "secure@microsoft.com", "type": "Primary"}]}, "published": "2026-04-14T18:17:27.360", "references": [{"source": "secure@microsoft.com", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32202"}], "sourceIdentifier": "secure@microsoft.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-693"}], "source": "secure@microsoft.com", "type": "Primary"}]}

{}

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"matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Windows Server 2019", "source": "cna", "vendor": "Microsoft"}, "product": "windows_server_2019", "vendor": "microsoft"}, {"configurations": [{"platform": ["x64-based_systems"], "status": "affected", "versions": {"scheme": "generic", "value": "[10.0.17763.0,10.0.17763.8644)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Windows Server 2019 (Server Core installation)", "source": "cna", "vendor": "Microsoft"}, "product": "windows_server_2019_(server_core_installation)", "vendor": "microsoft"}, {"configurations": [{"platform": ["x64-based_systems"], "status": "affected", "versions": {"scheme": "generic", "value": "[10.0.20348.0,10.0.20348.5020)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Windows Server 2022", "source": "cna", "vendor": "Microsoft"}, "product": "windows_server_2022", "vendor": "microsoft"}, {"configurations": [{"platform": ["x64-based_systems"], "status": "affected", "versions": {"scheme": "generic", "value": "[10.0.25398.0,10.0.25398.2274)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Windows Server 2022, 23H2 Edition (Server Core installation)", "source": "cna", "vendor": "Microsoft"}, "product": "windows_server_2022,_23h2_edition_(server_core_installation)", "vendor": "microsoft"}, {"configurations": [{"platform": ["x64-based_systems"], "status": "affected", "versions": {"scheme": "generic", "value": "[10.0.26100.0,10.0.26100.32690)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Windows Server 2025", "source": "cna", "vendor": "Microsoft"}, "product": "windows_server_2025", "vendor": "microsoft"}, {"configurations": [{"platform": ["x64-based_systems"], "status": "affected", "versions": {"scheme": "generic", "value": "[10.0.26100.0,10.0.26100.32690)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Windows Server 2025 (Server Core installation)", "source": "cna", "vendor": "Microsoft"}, "product": "windows_server_2025_(server_core_installation)", "vendor": "microsoft"}], "analysis": {"en": {"generated_at": "2026-04-14T20:00:27.895126+00:00", "value": {"mitigation_remediation": ["Install the security update issued by Microsoft for CVE-2026-32202 through Windows Update or the Microsoft Update Catalog and confirm that the update is applied to all affected Windows 10, Windows 11, and Windows Server systems.", "Verify that the installed update has been successfully installed on all installations listed under the affected systems, including Server Core editions.", "Continue to enforce network segmentation and firewall rules that limit unnecessary inbound traffic to systems that host the vulnerable Windows Shell component."], "summary": {"action": "Apply Patch", "impact": "Spoofing over a network via Windows Shell"}, "threat_synthesis": {"affected_systems": "Microsoft Windows 10 versions 1607, 1809, 21H2, and 22H2; Windows 11 versions 23H2, 24H2, 25H2, 22H3, and 26H1; Windows Server editions 2012, 2012\u202fR2, 2016, 2019, 2022, 2025, and 23H2 (Server Core and full installations). All affected releases are listed in the CNA vendor information.\n", "description_and_impact": "A failure in a protection mechanism of the Windows Shell permits an unauthorized attacker to spoof network communications, potentially allowing the attacker to impersonate legitimate network services or devices. The vulnerability can lead to data that is trusted by other systems being delivered or received from an attacker-controlled source, thereby undermining authentication and confidentiality. The primary weakness associated with this issue is identified as CWE\u2011693\u2014an improper handling of authenticated session data or state.\n", "risk_and_exploitability": "The assessed CVSS score is 4.3, indicating a moderate severity. EPSS data is not available, and the vulnerability is not listed in the CISA KEV catalog, suggesting that there is no current evidence of widespread exploitation. Based on the description, the attack vector is likely network-based, requiring an attacker to send crafted packets or payloads to a system over a communication channel that permits Windows Shell interaction. Because the issue does not provide remote code execution or privilege escalation, the overall risk to a single user or isolated environment remains limited, but organizational deployments exposed to untrusted networks may suffer from impersonation or credential compromise."}}}}, "created": "2026-04-15T15:00:06.178570+00:00", "updated": "2026-04-15T21:00:09.479374+00:00", "vendors": ["microsoft", "microsoft$PRODUCT$windows_10_1607", "microsoft$PRODUCT$windows_10_1809", "microsoft$PRODUCT$windows_10_21h2", "microsoft$PRODUCT$windows_10_22h2", "microsoft$PRODUCT$windows_11_22h3", "microsoft$PRODUCT$windows_11_23h2", "microsoft$PRODUCT$windows_11_24h2", "microsoft$PRODUCT$windows_11_25h2", "microsoft$PRODUCT$windows_11_26h1", "microsoft$PRODUCT$windows_server_2012", "microsoft$PRODUCT$windows_server_2012_(server_core_installation)", "microsoft$PRODUCT$windows_server_2012_r2", "microsoft$PRODUCT$windows_server_2012_r2_(server_core_installation)", "microsoft$PRODUCT$windows_server_2016", "microsoft$PRODUCT$windows_server_2016_(server_core_installation)", "microsoft$PRODUCT$windows_server_2019", "microsoft$PRODUCT$windows_server_2019_(server_core_installation)", "microsoft$PRODUCT$windows_server_2022", "microsoft$PRODUCT$windows_server_2022,_23h2_edition_(server_core_installation)", "microsoft$PRODUCT$windows_server_2025", "microsoft$PRODUCT$windows_server_2025_(server_core_installation)"]}