CVE-2009-0086

Name: CVE-2009-0086
Creator: NVD / NIST
Published: 2009-04-15T08:00:00.453+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 14.15%

Last modified Jun 16, 2026

CVE-2009-0086 is a vulnerability of currently unknown severity. 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 2008 allows remote HTTP servers to execute arbitrary code via crafted parameter values in a response, related to error handling, aka "Windows HTTP Services Integer Underflow Vulnerability.". EPSS estimates a 14.15% chance of exploitation in the next 30 days.

Description

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 2008 allows remote HTTP servers to execute arbitrary code via crafted parameter values in a response, related to error handling, aka "Windows HTTP Services Integer Underflow Vulnerability."

Metrics

EPSS Probability

14.15%

96.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-189

Affected Software

Vendor	Product	Versions	Update
Microsoft	Windows 2000	All versions	Sp4
Microsoft	Windows Server 2003	All versions	—
Microsoft	Windows Server 2008	All versions	—
Microsoft	Windows Vista	All versions	—
Microsoft	Windows Vista	gold	—
Microsoft	Windows Xp	All versions	Sp2

References

Timeline

Published: Apr 15, 2009
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2009-0086?

How severe is CVE-2009-0086?

Severity scoring for CVE-2009-0086 is pending analysis. The EPSS model estimates a 14.15% probability of exploitation in the next 30 days.

How do I fix CVE-2009-0086?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2009-0086?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST