CVE-2009-1135
9.0 · HIGHOverview
CVE-2009-1135 is a high-severity vulnerability affecting microsoft isa_server. It was published on July 15, 2009 and has a CVSS 2.0 base score of 9.0 (HIGH).
This vulnerability has a CVSS 2.0 base score of 9.0, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical 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."
Remediation
Check the references section for vendor advisories and patches from microsoft. Update isa_server to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
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References
Frequently Asked Questions
What is CVE-2009-1135?
CVE-2009-1135 is a high-severity vulnerability affecting microsoft isa_server. It was published on July 15, 2009 and has a CVSS 2.0 base score of 9.0 (HIGH).
How severe is CVE-2009-1135?
This vulnerability has a CVSS 2.0 base score of 9.0, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2009-1135?
Check the references section for vendor advisories and patches from microsoft. Update isa_server to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2009-1135?
CyberStrike's AI-powered security agents can automatically detect CVE-2009-1135 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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