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{"affected": [{"configurations": [{"platform": ["arm64-based_systems", "x64-based_systems"], "status": "affected", "versions": {"scheme": "generic", "value": "[10.0.26100.0,10.0.26100.32690)"}}], "enrichment": {"confidence": 86.0, "confidence_source": "matching", "scores": [{"score": 86.0, "source": "matching"}]}, "original": {"product": "Windows 11 Version 24H2", "source": "cna", "vendor": "Microsoft"}, "product": "windows_11_24h2", "vendor": "microsoft"}, {"configurations": [{"platform": ["arm64-based_systems", "x64-based_systems"], "status": "affected", "versions": {"scheme": "generic", "value": "[10.0.26200.0,10.0.26200.8246)"}}], "enrichment": {"confidence": 86.0, "confidence_source": "matching", "scores": [{"score": 86.0, "source": "matching"}]}, "original": {"product": "Windows 11 Version 25H2", "source": "cna", "vendor": "Microsoft"}, "product": "windows_11_25h2", "vendor": "microsoft"}, {"configurations": [{"platform": ["arm64-based_systems", "x64-based_systems"], "status": "affected", "versions": {"scheme": "generic", "value": "[10.0.28000.0,10.0.28000.1836)"}}], "enrichment": {"confidence": 86.0, "confidence_source": "matching", "scores": [{"score": 86.0, "source": "matching"}]}, "original": {"product": "Windows 11 version 26H1", "source": "cna", "vendor": "Microsoft"}, "product": "windows_11_26h1", "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": "2026-04-14T19:57:33.255073+00:00", "value": {"mitigation_remediation": ["Install the latest Windows updates that include the patch for CVE-2026-32221 from Microsoft.", "If a patch cannot be applied immediately, limit user access to the graphics component or disable it temporarily.", "Monitor for suspicious graphics-related activity that may indicate exploitation attempts.", "Verify the successful application of the update by checking Windows Update history or the specific patch KB number."], "summary": {"action": "Patch Immediately", "impact": "Local Code Execution"}, "threat_synthesis": {"affected_systems": "Microsoft Windows 11 versions 24H2, 25H2, and 26H1, as well as Windows Server 2025 and its Server Core installation, are affected. No earlier or later releases are indicated.", "description_and_impact": "The vulnerability is a heap-based buffer overflow in the Microsoft Graphics Component. An attacker with local user privileges can craft inputs that cause memory corruption, allowing execution of arbitrary code. This can lead to compromise of the system and disclosure of confidential data, as the attacker gains the same privileges as the user who triggers the overflow.", "risk_and_exploitability": "The flaw received a CVSS score of 8.4, denoting high severity. EPSS is unavailable and the vulnerability is not listed in the CISA KEV catalog, suggesting no confirmed public exploits yet. The likely attack vector is local, meaning the attacker must first log in or gain local access. If executed, the attacker can run arbitrary code with user-level privileges, which could be leveraged to elevate privileges or install malware. Monitoring for abnormal graphics activity and applying the patch quickly reduces risk."}}}}, "created": "2026-04-15T15:00:06.175790+00:00", "updated": "2026-04-15T20:45:06.242046+00:00", "vendors": ["microsoft", "microsoft$PRODUCT$windows_11_24h2", "microsoft$PRODUCT$windows_11_25h2", "microsoft$PRODUCT$windows_11_26h1", "microsoft$PRODUCT$windows_server_2025", "microsoft$PRODUCT$windows_server_2025_(server_core_installation)"]}