{"cve":"CVE-2009-1135","nvd":{"published":"2009-07-15T15:30:01.327","modified":"2026-06-16T23:06:34.933","status":"Modified","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.\"","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-264"],"references":["http://secunia.com/advisories/35784","http://www.securitytracker.com/id?1022547","http://www.us-cert.gov/cas/techalerts/TA09-195A.html","http://www.vupen.com/english/advisories/2009/1889","https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-031"],"products":["microsoft:isa_server"],"source":"nvd","synced_at":"2026-10-19T19:54:07.895733559+00:00"},"epss":{"cve":"CVE-2009-1135","score":0.26454,"percentile":0.9801,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}