CVE-2009-2509
Active Directory Federation Services (ADFS) in Microsoft Windows Server 2003 SP2 and Server 2008 Gold and SP2 does not properly validate headers in HTTP requests, which allows remote authenticated users to execute arbitrary code via a crafted request to…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 17.1%, higher than 97% of all known CVEs. Patch or mitigate before the next change window.
Description
Active Directory Federation Services (ADFS) in Microsoft Windows Server 2003 SP2 and Server 2008 Gold and SP2 does not properly validate headers in HTTP requests, which allows remote authenticated users to execute arbitrary code via a crafted request to an IIS web server, aka "Remote Code Execution in ADFS Vulnerability."
- CVSS 2.0
- 9.0 HIGHAV:N/AC:L/Au:S/C:C/I:C/A:C
- EPSS
- 17.05% probability · 97th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- microsoft/windows server 2003 · microsoft/windows server 2008
- Source
- secure@microsoft.com
EPSS 17.1% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.us-cert.gov/cas/techalerts/TA09-342A.htmlUS Government Resource
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-070
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6441
- http://www.us-cert.gov/cas/techalerts/TA09-342A.htmlUS Government Resource
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-070
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6441
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.