{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2025-55234", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-55234", "idYear": 2025, "status": "PUBLISHED", "publishedAt": "2025-09-09T17:01:32.635Z", "updatedAt": "2026-02-26T17:48:50.660Z", "importedAt": "2026-10-24T01:57:39.058Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "Windows SMB Elevation of Privilege Vulnerability", "summary": "SMB Server might be susceptible to relay attacks depending on the configuration. An attacker who successfully exploited these vulnerabilities could perform relay attacks and make the users subject to elevation of privilege attacks.\nThe SMB Server already supports mechanisms for hardening against relay attacks:\n\nSMB Server signing\nSMB Server Extended Protection for Authentication (EPA)\n\nMicrosoft is releasing this CVE to provide customers with audit capabilities to help them to assess their environment and to identify any potential device or software incompatibility issues before deploying SMB Server hardening measures that protect against relay attacks.\nIf you have not already enabled SMB Server hardening measures, we advise customers to take the following actions to be protected from these relay attacks:\n\nAssess your environment by utilizing the audit capabilities that we are exposing in the September 2025 security updates. See Support for Audit Events to deploy SMB Server Hardening—SMB Server Signing & SMB Server EPA.\nAdopt appropriate SMB Server hardening measures.", "affected": [ { "vendor": "Microsoft", "product": "Windows 10 Version 1507", "platforms": [ "32-bit Systems", "x64-based Systems" ], "versions": [ { "version": "10.0.10240.0", "status": "affected", "versionType": "custom", "lessThan": "10.0.10240.21128" } ] }, { "vendor": "Microsoft", "product": "Windows 10 Version 1607", "platforms": [ "32-bit Systems", "x64-based Systems" ], "versions": [ { "version": "10.0.14393.0", "status": "affected", "versionType": "custom", "lessThan": "10.0.14393.8422" } ] }, { "vendor": "Microsoft", "product": "Windows 10 Version 1809", "platforms": [ "32-bit Systems", "x64-based Systems" ], "versions": [ { "version": "10.0.17763.0", "status": "affected", "versionType": "custom", "lessThan": "10.0.17763.7792" } ] }, { "vendor": "Microsoft", "product": "Windows 10 Version 21H2", "platforms": [ "32-bit Systems", "ARM64-based Systems", "x64-based Systems" ], "versions": [ { "version": "10.0.19044.0", "status": "affected", "versionType": "custom", "lessThan": "10.0.19044.6332" } ] }, { "vendor": "Microsoft", "product": "Windows 10 Version 22H2", "platforms": [ "32-bit Systems", "ARM64-based Systems", "x64-based Systems" ], "versions": [ { "version": "10.0.19045.0", "status": "affected", "versionType": "custom", "lessThan": "10.0.19045.6332" } ] }, { "vendor": "Microsoft", "product": "Windows 11 version 22H2", "platforms": [ "ARM64-based Systems", "x64-based Systems" ], "versions": [ { "version": "10.0.22621.0", "status": "affected", "versionType": "custom", "lessThan": "10.0.22621.5909" } ] }, { "vendor": "Microsoft", "product": "Windows 11 version 22H3", "platforms": [ "ARM64-based Systems" ], "versions": [ { "version": "10.0.22631.0", "status": "affected", "versionType": "custom", "lessThan": "10.0.22631.5909" } ] }, { "vendor": "Microsoft", "product": "Windows 11 Version 23H2", "platforms": [ "x64-based Systems" ], "versions": [ { "version": "10.0.22631.0", "status": "affected", "versionType": "custom", "lessThan": "10.0.22631.5909" } ] }, { "vendor": "Microsoft", "product": "Windows 11 Version 24H2", "platforms": [ "ARM64-based Systems", "x64-based Systems" ], "versions": [ { "version": "10.0.26100.0", "status": "affected", "versionType": "custom", "lessThan": "10.0.26100.6584" } ] }, { "vendor": "Microsoft", "product": "Windows Server 2008 R2 Service Pack 1", "platforms": [ "x64-based Systems" ], "versions": [ { "version": "6.1.7601.0", "status": "affected", "versionType": "custom", "lessThan": "6.1.7601.27929" } ] }, { "vendor": "Microsoft", "product": "Windows Server 2008 R2 Service Pack 1 (Server Core installation)", "platforms": [ "x64-based Systems" ], "versions": [ { "version": "6.1.7601.0", "status": "affected", "versionType": "custom", "lessThan": "6.1.7601.27929" } ] }, { "vendor": "Microsoft", "product": "Windows Server 2008 Service Pack 2", "platforms": [ "32-bit Systems", "x64-based Systems" ], "versions": [ { "version": "6.0.6003.0", "status": "affected", "versionType": "custom", "lessThan": "6.0.6003.23529" } ] }, { "vendor": "Microsoft", "product": "Windows Server 2008 Service Pack 2 (Server Core installation)", "platforms": [ "32-bit Systems", "x64-based Systems" ], "versions": [ { "version": "6.0.6003.0", "status": "affected", "versionType": "custom", "lessThan": "6.0.6003.23529" } ] }, { "vendor": "Microsoft", "product": "Windows Server 2012", "platforms": [ "x64-based Systems" ], "versions": [ { "version": "6.2.9200.0", "status": "affected", "versionType": "custom", "lessThan": "6.2.9200.25675" } ] }, { "vendor": "Microsoft", "product": "Windows Server 2012 (Server Core installation)", "platforms": [ "x64-based Systems" ], "versions": [ { "version": "6.2.9200.0", "status": "affected", "versionType": "custom", "lessThan": "6.2.9200.25675" } ] }, { "vendor": "Microsoft", "product": "Windows Server 2012 R2", "platforms": [ "x64-based Systems" ], "versions": [ { "version": "6.3.9600.0", "status": "affected", "versionType": "custom", "lessThan": "6.3.9600.22774" } ] }, { "vendor": "Microsoft", "product": "Windows Server 2012 R2 (Server Core installation)", "platforms": [ "x64-based Systems" ], "versions": [ { "version": "6.3.9600.0", "status": "affected", "versionType": "custom", "lessThan": "6.3.9600.22774" } ] }, { "vendor": "Microsoft", "product": "Windows Server 2016", "platforms": [ "x64-based Systems" ], "versions": [ { "version": "10.0.14393.0", "status": "affected", "versionType": "custom", "lessThan": "10.0.14393.8422" } ] }, { "vendor": "Microsoft", "product": "Windows Server 2016 (Server Core installation)", "platforms": [ "x64-based Systems" ], "versions": [ { "version": "10.0.14393.0", "status": "affected", "versionType": "custom", "lessThan": "10.0.14393.8422" } ] }, { "vendor": "Microsoft", "product": "Windows Server 2019", "platforms": [ "x64-based Systems" ], "versions": [ { "version": "10.0.17763.0", "status": "affected", "versionType": "custom", "lessThan": "10.0.17763.7792" } ] }, { "vendor": "Microsoft", "product": "Windows Server 2019 (Server Core installation)", "platforms": [ "x64-based Systems" ], "versions": [ { "version": "10.0.17763.0", "status": "affected", "versionType": "custom", "lessThan": "10.0.17763.7792" } ] }, { "vendor": "Microsoft", "product": "Windows Server 2022", "platforms": [ "x64-based Systems" ], "versions": [ { "version": "10.0.20348.0", "status": "affected", "versionType": "custom", "lessThan": "10.0.20348.4171" } ] }, { "vendor": "Microsoft", "product": "Windows Server 2022, 23H2 Edition (Server Core installation)", "platforms": [ "x64-based Systems" ], "versions": [ { "version": "10.0.25398.0", "status": "affected", "versionType": "custom", "lessThan": "10.0.25398.1849" } ] }, { "vendor": "Microsoft", "product": "Windows Server 2025", "platforms": [ "x64-based Systems" ], "versions": [ { "version": "10.0.26100.0", "status": "affected", "versionType": "custom", "lessThan": "10.0.26100.6584" } ] }, { "vendor": "Microsoft", "product": "Windows Server 2025 (Server Core installation)", "platforms": [ "x64-based Systems" ], "versions": [ { "version": "10.0.26100.0", "status": "affected", "versionType": "custom", "lessThan": "10.0.26100.6584" } ] } ] } } }