fkie_cve-2025-55234
Vulnerability from fkie_nvd
Published
2025-09-09 17:16
Modified
2025-09-12 14:44
Severity ?
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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. The SMB Server already supports mechanisms for hardening against relay attacks: SMB Server signing SMB Server Extended Protection for Authentication (EPA) Microsoft 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. If you have not already enabled SMB Server hardening measures, we advise customers to take the following actions to be protected from these relay attacks: Assess 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. Adopt appropriate SMB Server hardening measures.
References
secure@microsoft.comhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55234Vendor Advisory
Impacted products
Vendor Product Version
microsoft windows_10_1507 *
microsoft windows_10_1507 *
microsoft windows_10_1607 *
microsoft windows_10_1607 *
microsoft windows_10_1809 *
microsoft windows_10_1809 *
microsoft windows_10_21h2 *
microsoft windows_10_22h2 *
microsoft windows_11_22h2 *
microsoft windows_11_23h2 *
microsoft windows_11_24h2 *
microsoft windows_server_2008 -
microsoft windows_server_2008 -
microsoft windows_server_2008 r2
microsoft windows_server_2012 -
microsoft windows_server_2012 r2
microsoft windows_server_2016 *
microsoft windows_server_2019 *
microsoft windows_server_2022 *
microsoft windows_server_2022_23h2 *
microsoft windows_server_2025 *


To clipboard 

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      "lang": "en",
      "value": "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\u2014SMB Server Signing \u0026amp; SMB Server EPA.\nAdopt appropriate SMB Server hardening measures."
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  "id": "CVE-2025-55234",
  "lastModified": "2025-09-12T14:44:14.567",
  "metrics": {
    "cvssMetricV31": [
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          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
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          "baseScore": 8.8,
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          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
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