{"id":"CVE-2009-1135","aliases":["EUVD-2009-1136","GHSA-r622-f8m7-c595"],"status":"published","title":"Microsoft Internet Security and Acceleration (ISA) Server 2006 Gold and SP1, when Radius OTP is...","description":"Microsoft Internet Security and Acceleration (ISA) Server 2006 Gold and SP1, when Radius OTP is enabled, uses the HTTP-Basic authentication method, which allows remote attackers to gain the privileges of an arbitrary account, and access published web pages, via vectors involving attempted access to a network resource behind the ISA Server, aka \"Radius OTP Bypass Vulnerability.\"","severity":{"version":"2.0","score":9,"vector":"AV:N/AC:L/Au:S/C:C/I:C/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.26454,"percentile":0.98021,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-264"],"published":"2009-07-15T15:00:00Z","modified":"2026-06-16T23:06:34Z","products":[{"vendor":"microsoft","product":"isa_server"}],"references":[{"url":"http://www.securitytracker.com/id?1022547","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5649","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred"]},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-031","tags":["vendor-advisory","x_refsource_MS","x_transferred"]},{"url":"http://www.vupen.com/english/advisories/2009/1889","tags":["vdb-entry","x_refsource_VUPEN","x_transferred"]},{"url":"http://www.us-cert.gov/cas/techalerts/TA09-195A.html","tags":["third-party-advisory","x_refsource_CERT","x_transferred","US Government Resource"]},{"url":"http://secunia.com/advisories/35784","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2009-1135"},{"url":"https://github.com/advisories/GHSA-r622-f8m7-c595"}],"sources":{"cve":[{"id":"CVE-2009-1135","description":"Microsoft Internet Security and Acceleration (ISA) Server 2006 Gold and SP1, when Radius OTP is enabled, uses the HTTP-Basic authentication method, which allows remote attackers to gain the privileges of an arbitrary account, and access published web pages, via vectors involving attempted access to a network resource behind the ISA Server, aka \"Radius OTP Bypass Vulnerability.\"","status":"published","published":"2009-07-15T15:00:00Z","modified":"2024-08-07T05:04:48.291Z","updated_at":"2026-11-02T14:33:25.126493Z"}],"euvd":[{"id":"EUVD-2009-1136","description":"Microsoft Internet Security and Acceleration (ISA) Server 2006 Gold and SP1, when Radius OTP is enabled, uses the HTTP-Basic authentication method, which allows remote attackers to gain the privileges of an arbitrary account, and access published web pages, via vectors involving attempted access to a network resource behind the ISA Server, aka \"Radius OTP Bypass Vulnerability.\"","status":"published","published":"2009-07-15T15:00:00Z","modified":"2024-08-07T05:04:48Z","updated_at":"2026-11-03T01:39:22.935477Z"}],"ghsa":[{"id":"GHSA-r622-f8m7-c595","title":"Microsoft Internet Security and Acceleration (ISA) Server 2006 Gold and SP1, when Radius OTP is...","description":"Microsoft Internet Security and Acceleration (ISA) Server 2006 Gold and SP1, when Radius OTP is enabled, uses the HTTP-Basic authentication method, which allows remote attackers to gain the privileges of an arbitrary account, and access published web pages, via vectors involving attempted access to a network resource behind the ISA Server, aka \"Radius OTP Bypass Vulnerability.\"","status":"published","published":"2022-05-02T03:22:02Z","modified":"2023-01-31T05:07:22Z","updated_at":"2026-11-02T14:49:12.176696Z"}],"nvd":[{"id":"CVE-2009-1135","description":"Microsoft Internet Security and Acceleration (ISA) Server 2006 Gold and SP1, when Radius OTP is enabled, uses the HTTP-Basic authentication method, which allows remote attackers to gain the privileges of an arbitrary account, and access published web pages, via vectors involving attempted access to a network resource behind the ISA Server, aka \"Radius OTP Bypass Vulnerability.\"","status":"published","published":"2009-07-15T15:30:01.327Z","modified":"2026-06-16T23:06:34.933Z","cvss":[{"version":"2.0","score":9,"vector":"AV:N/AC:L/Au:S/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-264"],"updated_at":"2026-11-02T14:01:36.200173Z"}]}}