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["x64-based_systems"], "status": "affected", "versions": {"scheme": "generic", "value": "[10.0.26100.0,10.0.26100.32522)"}}], "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": "[10.0.26100.0,10.0.26100.32522)"}}], "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": "2026-03-28T05:26:30.222294+00:00", "value": {"mitigation_remediation": ["Download and install the official Windows update addressing CVE\u20112026\u201123672 from Microsoft\u2019s Security Update Guide (https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23672).", "If the update is not available for a specific OS version, defer using removable media or devices that rely on the UDFS driver until a patch is released.", "Verify that the UDFS driver is not being used by unnecessary applications and apply least\u2011privilege principles.", "Keep the operating system up to date and monitor Microsoft security advisories for future patches."], "summary": {"action": "Immediate Patch", "impact": "Elevation of Privilege"}, "threat_synthesis": {"affected_systems": "Affected by this flaw are multiple Microsoft Windows and Server releases, including Windows\u202f10 versions 1607, 1809, 21H2, 22H2, Windows\u202f11 versions 23H2, 24H2, 25H2, 22H3, 26H1, and Windows Server editions 2012, 2012\u202fR2, 2016, 2019, 2022, 2025 and their Server\u2011Core variants.", "description_and_impact": "The Windows Universal Disk Format (UDFS) file system driver contains an elevation\u2011of\u2011privilege flaw that could allow an attacker who can interact with the driver to gain higher privileges on the local system. The vulnerability could compromise confidentiality, integrity and availability by enabling the attacker to run code with system\u2011level permissions. The exact exploitation scenario is not detailed in the available description, but the impact is clear.", "risk_and_exploitability": "Based on the CVSS score of 7.8 the vulnerability is rated as high severity. The EPSS score of <1\u202f% indicates it is currently unlikely to be widely exploited. The vulnerability is not listed in the CISA KEV catalog. Attackers would need to gain access to the UDFS driver interface, which typically requires local presence, suggesting the risk is mainly from local attackers or compromised devices."}}}}, "created": "2026-03-11T11:46:50.982435+00:00", "updated": "2026-03-29T20:26:34.389737+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)"]}