CVE-2009-1135

no score yetEPSS 26%

microsoft isa server: no CVSS score yet. EPSS 26% chance of exploitation in the next 30 days.

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."

EPSS: 26% chance of exploitation in the next 30 days; higher than 98% of CVEs (scores of 2026-10-31)
CWE: CWE-264
Published: 2009-07-15
Modified: 2026-06-16
Record from: the NVD, synced 2026-10-19

Affected

microsoft:isa_server

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

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