CVE-2009-1135 in the critical feed json
Microsoft Internet Security and Acceleration (ISA) Server 2006 Gold and SP1, when Radius OTP is enabled, uses the HTTP-Basic authentication…
published 2009-07-15 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-1136
- cvss
- 9.0
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 26.5%
- EPSS 26.5% chance of exploitation in 30 days, percentile 98%
- public exploits
- 0
- none known
Summary
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."
Exploit prediction
26.45% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 9.0 | AV:N/AC:L/Au:S/C:C/I:C/A:C |
Classification
- Weakness
-
- CWE-264 Permissions, Privileges, and Access Controls
References
-
docs.microsoft.com
/en-us/security-updates/securitybulletins/2009/ms09-031
vendor-advisory
-
securitytracker.com
/id?1022547
vdb-entry
-
oval.cisecurity.org
/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5649
vdb-entry, signature
-
vupen.com
/english/advisories/2009/1889
vdb-entry
-
us-cert.gov
/cas/techalerts/TA09-195A.html
third-party-advisory, us-government-resource
-
secunia.com
/advisories/35784
third-party-advisory
Sources
- CVE List CVE-2009-1135
- NVD CVE-2009-1135
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