CVE-2009-0086

Integer underflow in 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…

published April 15, 2009

CVSS
—
EPSS
14%
Percentile
96.6
In the wild
Unconfirmed
What it is

⚠️ An integer underflow in Windows HTTP Services could let attackers execute arbitrary code with just a crafted response! 🎯 Think of it like a restaurant where a miscalculation on a bill leads to your food order being served in reverse — instead of just paying more, someone could slip in their own order without you knowing! If exploited, this vulnerability could allow remote servers to run malicious code, which could lead to compromised systems and data breaches. Even though it’s not currently known to be exploited, the potential for chaos is absolutely concerning!

Put simply

Think of it like a restaurant where a miscalculation on a bill leads to your food order being served in reverse — instead of just paying more, someone could slip in their own order without you knowing! This integer underflow vulnerability occurs in various Windows versions, allowing attackers to manipulate parameters in HTTP responses, resulting in arbitrary code execution. It stems from improper error handling in WinHTTP.

What to do

If exploited, this vulnerability could allow remote servers to run malicious code, which could lead to compromised systems and data breaches. Even though it’s not currently known to be exploited, the potential for chaos is absolutely concerning! To mitigate this vulnerability, ensure that your systems are updated with the latest patches and security updates from Microsoft. For those on older versions, consider upgrading to supported ones to avoid potential risks! You’ve got this! Keep your systems updated and stay vigilant, and you’ll be a security hero in no time! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.14150 · 96.6th percentile
Published
2009-04-15T03:49Z
EPSS history
Timeline
  • 15 APR 03:49Z
    Integer underflow in 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…
    cvelistv5