CVE-2009-1135
Microsoft Internet Security and Acceleration (ISA) Server 2006 Gold and SP1, when Radius OTP is enabled, uses the HTTP-Basic…
- 9.0HighCVSS base score
- 26.5%Exploitation in 30 daysEPSS · top 2.0% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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."
Timeline
ID reserved
By microsoft
- 4 months later
· 4 months later
Published
- 15 years later
· 15 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High9.0 | AV:N/AC:L/Au:S/C:C/I:C/A:C |
- EPSS (exploitation in 30 days)
- 26.5% · top 2.0% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 9.0.
Affected products
n/a
- affected n/a
References
References6
- 1022547 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- oval:org.mitre.oval:def:5649 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- MS09-031 (opens in a new tab)vendor-advisoryx_refsource_MSx_transferred
- ADV-2009-1889 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- TA09-195A (opens in a new tab)third-party-advisoryx_refsource_CERTx_transferred
- 35784 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2009-1136 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2009-1135)Record last updated .