{"id":"CVE-2015-6112","aliases":["EUVD-2015-6055","GHSA-3x7v-wjr7-jrcm"],"status":"published","title":"SChannel in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1,...","description":"SChannel in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 lacks the required extended master-secret binding support to ensure that a server's X.509 certificate is the same during renegotiation as it was before renegotiation, which allows man-in-the-middle attackers to obtain sensitive information or modify TLS session data via a \"triple handshake attack,\" aka \"Schannel TLS Triple Handshake Vulnerability.\"","severity":{"version":"2.0","score":5.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.028,"percentile":0.8656,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20","CWE-310"],"published":"2015-11-11T11:00:00Z","modified":"2026-06-17T00:30:24Z","products":[{"vendor":"microsoft","product":"windows_7"},{"vendor":"microsoft","product":"windows_8"},{"vendor":"microsoft","product":"windows_8.1"},{"vendor":"microsoft","product":"windows_rt"},{"vendor":"microsoft","product":"windows_rt_8.1"},{"vendor":"microsoft","product":"windows_server_2008"},{"vendor":"microsoft","product":"windows_server_2012"},{"vendor":"microsoft","product":"windows_vista"}],"references":[{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-121","tags":["vendor-advisory","x_refsource_MS","x_transferred","Patch","Vendor Advisory"]},{"url":"http://www.securitytracker.com/id/1034124","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2015-6112"},{"url":"https://github.com/advisories/GHSA-3x7v-wjr7-jrcm"}],"sources":{"cve":[{"id":"CVE-2015-6112","description":"SChannel in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 lacks the required extended master-secret binding support to ensure that a server's X.509 certificate is the same during renegotiation as it was before renegotiation, which allows man-in-the-middle attackers to obtain sensitive information or modify TLS session data via a \"triple handshake attack,\" aka \"Schannel TLS Triple Handshake Vulnerability.\"","status":"published","published":"2015-11-11T11:00:00Z","modified":"2024-08-06T07:15:12.771Z","updated_at":"2026-11-02T14:35:42.680858Z"}],"euvd":[{"id":"EUVD-2015-6055","description":"SChannel in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 lacks the required extended master-secret binding support to ensure that a server's X.509 certificate is the same during renegotiation as it was before renegotiation, which allows man-in-the-middle attackers to obtain sensitive information or modify TLS session data via a \"triple handshake attack,\" aka \"Schannel TLS Triple Handshake Vulnerability.\"","status":"published","published":"2015-11-11T11:00:00Z","modified":"2024-08-06T07:15:12Z","updated_at":"2026-11-03T02:21:57.175525Z"}],"ghsa":[{"id":"GHSA-3x7v-wjr7-jrcm","title":"SChannel in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1,...","description":"SChannel in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 lacks the required extended master-secret binding support to ensure that a server's X.509 certificate is the same during renegotiation as it was before renegotiation, which allows man-in-the-middle attackers to obtain sensitive information or modify TLS session data via a \"triple handshake attack,\" aka \"Schannel TLS Triple Handshake Vulnerability.\"","status":"published","published":"2022-05-14T01:01:29Z","modified":"2025-04-12T12:54:59Z","cwes":["CWE-20"],"updated_at":"2026-11-02T15:01:24.694642Z"}],"nvd":[{"id":"CVE-2015-6112","description":"SChannel in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 lacks the required extended master-secret binding support to ensure that a server's X.509 certificate is the same during renegotiation as it was before renegotiation, which allows man-in-the-middle attackers to obtain sensitive information or modify TLS session data via a \"triple handshake attack,\" aka \"Schannel TLS Triple Handshake Vulnerability.\"","status":"published","published":"2015-11-11T12:59:45.513Z","modified":"2026-06-17T00:30:24.697Z","cvss":[{"version":"2.0","score":5.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-20","CWE-310"],"updated_at":"2026-11-02T14:03:12.30866Z"}]}}