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CVE-2009-0550

Published: Apr 15, 2009Updated: Apr 23, 2026 Sources: CVE List NVDNVD-CWE-Other
NVD MITRE
9.3CVSSCRITICAL
EPSS Score
11.7%
Top 4.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

Description

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."

CVSS Vector Breakdown

AV:NAC:MAu:NC:CI:CA:C
Exploitability
AV:NAccess Vector
Network
AC:MAccess Complexity
Medium
Au:NAuthentication
None
Impact
C:CConfidentiality
Complete
I:CIntegrity
Complete
A:CAvailability
Complete
Open in CVSS calculator →

Weaknesses

NVD-CWE-Other

Affected Products

windows 2000microsoft
OS
Operating Systems / windows
windows server 2003microsoft
OS
Operating Systems / windows
windows server 2008microsoft
On-premOS
Operating Systems / windows
windows vistamicrosoft
OS
Operating Systems / windows
windows xpmicrosoft
OS
Operating Systems / windows
microsoftcommercialUSOperating Systems
and 3 more affected products View all →

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

References

http://blogs.technet.com/srd/archive/2009/04/14/ntlm-credential-reflection-updates-for-http-clients.aspx
blogs.technet.com
http://osvdb.org/53619
osvdb.org
http://secunia.com/advisories/34677
secunia.com
and 13 more references View all →

Timeline

Published
Apr 15, 2009
Last Updated
Apr 23, 2026

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