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…

published April 15, 2009

CVSS
—
EPSS
12%
Percentile
96.1
In the wild
Unconfirmed
What it is

🚨 A missing "credential-reflection protection" step turns your NTLM credentials into an open book for attackers! Think of it like a restaurant that accidentally leaves the back door wide open during peak hours — anyone can waltz in and grab a meal (or in this case, sensitive credentials) without anyone noticing! If exploited, a remote web server could capture and replay your NTLM credentials, leading to unauthorized access and the potential for arbitrary code execution. This is absolutely devastating for users who thought they were safe in their own digital dining room!

Put simply

Think of it like a restaurant that accidentally leaves the back door wide open during peak hours — anyone can waltz in and grab a meal (or in this case, sensitive credentials) without anyone noticing! This vulnerability in Windows HTTP Services and WinINet allows attackers to bypass credential protections, enabling them to exploit NTLM authentication without proper safeguards in place.

What to do

If exploited, a remote web server could capture and replay your NTLM credentials, leading to unauthorized access and the potential for arbitrary code execution. This is absolutely devastating for users who thought they were safe in their own digital dining room! To protect against this, ensure that you're operating on updated systems and consider disabling NTLM authentication if possible. Additionally, review your security policies to restrict access to sensitive areas of your network. You've got this! By keeping your systems updated and vigilant, you can secure your credentials and keep the bad guys at bay! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.11801 · 96.1th percentile
Published
2009-04-15T03:49Z
EPSS history
Timeline
  • 15 APR 03:49Z
    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…
    cvelistv5