{"id":"CVE-2009-0550","aliases":["EUVD-2009-0554","GHSA-xgq6-cgqf-jpp9"],"status":"published","title":"Windows HTTP Services (aka WinHTTP) in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003...","description":"Windows HTTP Services (aka WinHTTP) in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP1 and SP2, Vista Gold and SP1, and Server 2008; and WinINet in Microsoft Internet Explorer 5.01 SP4, 6 SP1, 6 and 7 on Windows XP SP2 and SP3, 6 and 7 on Windows Server 2003 SP1 and SP2, 7 on Windows Vista Gold and SP1, and 7 on Windows Server 2008; allows remote web servers to capture and replay NTLM credentials, and execute arbitrary code, via vectors related to absence of a \"credential-reflection protections\" opt-in step, aka \"Windows HTTP Services Credential Reflection Vulnerability\" and \"WinINet Credential Reflection Vulnerability.\"","severity":{"version":"2.0","score":9.3,"vector":"AV:N/AC:M/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.11801,"percentile":0.96113,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2009-04-15T03:49:00Z","modified":"2026-06-16T23:05:16Z","products":[{"vendor":"microsoft","product":"ie"},{"vendor":"microsoft","product":"internet_explorer"},{"vendor":"microsoft","product":"windows_2000"},{"vendor":"microsoft","product":"windows_server_2003"},{"vendor":"microsoft","product":"windows_server_2008"},{"vendor":"microsoft","product":"windows_vista"},{"vendor":"microsoft","product":"windows_xp"}],"references":[{"url":"http://www.vupen.com/english/advisories/2009/1028","tags":["vdb-entry","x_refsource_VUPEN","x_transferred"]},{"url":"http://osvdb.org/53619","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"http://secunia.com/advisories/34677","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred"]},{"url":"http://www.us-cert.gov/cas/techalerts/TA09-104A.html","tags":["third-party-advisory","x_refsource_CERT","x_transferred","US Government Resource"]},{"url":"http://www.securitytracker.com/id?1022041","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"http://secunia.com/advisories/34678","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6233","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7569","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred"]},{"url":"http://blogs.technet.com/srd/archive/2009/04/14/ntlm-credential-reflection-updates-for-http-clients.aspx","tags":["x_refsource_MISC","x_transferred"]},{"url":"http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL\u0026id=871138","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://www.securityfocus.com/bid/34439","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-014","tags":["vendor-advisory","x_refsource_MS","x_transferred"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5320","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred"]},{"url":"http://www.vupen.com/english/advisories/2009/1027","tags":["vdb-entry","x_refsource_VUPEN","x_transferred"]},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-013","tags":["vendor-advisory","x_refsource_MS","x_transferred"]},{"url":"http://support.avaya.com/elmodocs2/security/ASA-2009-133.htm","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2009-0550"},{"url":"https://github.com/advisories/GHSA-xgq6-cgqf-jpp9"}],"sources":{"cve":[{"id":"CVE-2009-0550","description":"Windows HTTP Services (aka WinHTTP) in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP1 and SP2, Vista Gold and SP1, and Server 2008; and WinINet in Microsoft Internet Explorer 5.01 SP4, 6 SP1, 6 and 7 on Windows XP SP2 and SP3, 6 and 7 on Windows Server 2003 SP1 and SP2, 7 on Windows Vista Gold and SP1, and 7 on Windows Server 2008; allows remote web servers to capture and replay NTLM credentials, and execute arbitrary code, via vectors related to absence of a \"credential-reflection protections\" opt-in step, aka \"Windows HTTP Services Credential Reflection Vulnerability\" and \"WinINet Credential Reflection Vulnerability.\"","status":"published","published":"2009-04-15T03:49:00Z","modified":"2024-08-07T04:40:05.067Z","updated_at":"2026-11-02T14:33:26.302774Z"}],"euvd":[{"id":"EUVD-2009-0554","description":"Windows HTTP Services (aka WinHTTP) in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP1 and SP2, Vista Gold and SP1, and Server 2008; and WinINet in Microsoft Internet Explorer 5.01 SP4, 6 SP1, 6 and 7 on Windows XP SP2 and SP3, 6 and 7 on Windows Server 2003 SP1 and SP2, 7 on Windows Vista Gold and SP1, and 7 on Windows Server 2008; allows remote web servers to capture and replay NTLM credentials, and execute arbitrary code, via vectors related to absence of a \"credential-reflection protections\" opt-in step, aka \"Windows HTTP Services Credential Reflection Vulnerability\" and \"WinINet Credential Reflection Vulnerability.\"","status":"published","published":"2009-04-15T03:49:00Z","modified":"2024-08-07T04:40:05Z","updated_at":"2026-11-03T01:39:25.189813Z"}],"ghsa":[{"id":"GHSA-xgq6-cgqf-jpp9","title":"Windows HTTP Services (aka WinHTTP) in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003...","description":"Windows HTTP Services (aka WinHTTP) in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP1 and SP2, Vista Gold and SP1, and Server 2008; and WinINet in Microsoft Internet Explorer 5.01 SP4, 6 SP1, 6 and 7 on Windows XP SP2 and SP3, 6 and 7 on Windows Server 2003 SP1 and SP2, 7 on Windows Vista Gold and SP1, and 7 on Windows Server 2008; allows remote web servers to capture and replay NTLM credentials, and execute arbitrary code, via vectors related to absence of a \"credential-reflection protections\" opt-in step, aka \"Windows HTTP Services Credential Reflection Vulnerability\" and \"WinINet Credential Reflection Vulnerability.\"","status":"published","published":"2022-05-02T03:16:33Z","modified":"2023-01-31T05:07:37Z","updated_at":"2026-11-02T14:49:14.611815Z"}],"nvd":[{"id":"CVE-2009-0550","description":"Windows HTTP Services (aka WinHTTP) in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP1 and SP2, Vista Gold and SP1, and Server 2008; and WinINet in Microsoft Internet Explorer 5.01 SP4, 6 SP1, 6 and 7 on Windows XP SP2 and SP3, 6 and 7 on Windows Server 2003 SP1 and SP2, 7 on Windows Vista Gold and SP1, and 7 on Windows Server 2008; allows remote web servers to capture and replay NTLM credentials, and execute arbitrary code, via vectors related to absence of a \"credential-reflection protections\" opt-in step, aka \"Windows HTTP Services Credential Reflection Vulnerability\" and \"WinINet Credential Reflection Vulnerability.\"","status":"published","published":"2009-04-15T08:00:00.593Z","modified":"2026-06-16T23:05:16.983Z","cvss":[{"version":"2.0","score":9.3,"vector":"AV:N/AC:M/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:01:34.44527Z"}]}}