CVE-2009-0550
Windows HTTP Services (aka WinHTTP) in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP1 and SP2, Vista Gold and SP1, and Server 2008; and WinINet in Microsoft Internet Explorer 5.01 SP4, 6 SP1, 6 and 7 on Windows XP SP2 and SP3, 6 and 7 on Windows Server 2003 SP1 and SP2, 7 on Windows Vista Gold and SP1, and 7 on Windows Server 2008; allows remote web servers to capture and replay NTLM credentials, and execute arbitrary code, via vectors related to absence of a "credential-reflection protections" opt-in step, aka "Windows HTTP Services Credential Reflection Vulnerability" and "WinINet Credential Reflection Vulnerability."
Key facts
- CVSS score
- 9.3 (v2.0)
- Severity
- HIGH
- CVSS vector
AV:N/AC:M/Au:N/C:C/I:C/A:C- EPSS score
- 11.8% (96th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2009-0554)
- Published
- April 15, 2009
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2009-0554 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- microsoft / ie
- microsoft / internet explorer
- microsoft / internet explorer
- microsoft / internet explorer
- microsoft / windows 2000
- microsoft / windows server 2003
- microsoft / windows server 2003
- microsoft / windows server 2003
- microsoft / windows server 2003
- microsoft / windows server 2008
- microsoft / windows server 2008
- microsoft / windows server 2008
- microsoft / windows server 2008
- microsoft / windows server 2008
- microsoft / windows vista
- microsoft / windows vista
- microsoft / windows vista
- microsoft / windows vista
- microsoft / windows xp
- microsoft / windows xp
- microsoft / windows xp
- microsoft / windows xp
- microsoft / windows xp
- microsoft / windows xp
Certified products that may be affected
11 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.
- Windows Vista Enhanced Cryptographic Provider (RSAENH) - Microsoft Corporation - FIPS 140 1002 - historical
- Windows Vista Enhanced DSS and Diffie-Hellman Cryptographic Provider (DSSENH) - Microsoft Corporation - FIPS 140 1003 - historical
- Windows XP Enhanced Cryptographic Provider (RSAENH) - Microsoft Corporation - FIPS 140 989 - historical
- Windows XP Enhanced DSS and Diffie-Hellman Cryptographic Provider (DSSENH) - Microsoft Corporation - FIPS 140 990 - historical
- Windows Vista Boot Manager (bootmgr) - Microsoft Corporation - FIPS 140 978 - historical
See all 11 in the Security Certifications Explorer.
References
- http://blogs.technet.com/srd/archive/2009/04/14/ntlm-credential-reflection-updates-for-http-clients.aspx
- http://osvdb.org/53619
- http://secunia.com/advisories/34677
- http://secunia.com/advisories/34678
- http://support.avaya.com/elmodocs2/security/ASA-2009-133.htm
- http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=871138
- http://www.securityfocus.com/bid/34439
- http://www.securitytracker.com/id?1022041
- http://www.us-cert.gov/cas/techalerts/TA09-104A.html(US Government Resource)
- http://www.vupen.com/english/advisories/2009/1027
- http://www.vupen.com/english/advisories/2009/1028
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-013
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-014
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5320
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6233
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7569
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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