CVE-2005-4360

CVE-2005-4360 is a high-severity vulnerability in Microsoft Internet Information Services with a CVSS 2.0 base score of 7.8. Its EPSS exploit-prediction score of 87% places it in the 100th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-252.

Key facts

Description

The URL parser in Microsoft Internet Information Services (IIS) 5.1 on Windows XP Professional SP2 allows remote attackers to execute arbitrary code via multiple requests to ".dll" followed by arguments such as "~0" through "~9", which causes ntdll.dll to produce a return value that is not correctly handled by IIS, as demonstrated using "/_vti_bin/.dll/*/~0". NOTE: the consequence was originally believed to be only a denial of service (application crash and reboot).

Frequently asked questions

What is CVE-2005-4360?
The URL parser in Microsoft Internet Information Services (IIS) 5.1 on Windows XP Professional SP2 allows remote attackers to execute arbitrary code via multiple requests to ".dll" followed by arguments such as "~0" through "~9", which causes ntdll.dll to produce a return value that is not correctly handled by IIS, as demonstrated using "/_vti_bin/.dll/*/~0". NOTE: the consequence was originally believed to be only a denial of service (application crash and reboot).
How severe is CVE-2005-4360?
CVE-2005-4360 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2005-4360 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 87% (100th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2005-4360?
CVE-2005-4360 affects Microsoft Internet Information Services. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2005-4360?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2005-4360 published?
CVE-2005-4360 was published on 2005-12-20 and last updated on 2026-06-16.

References

Affected products (1)

More vulnerabilities in Microsoft Internet Information Services

All CVEs affecting Microsoft Internet Information Services →

Other CWE-252 vulnerabilities

Browse all CWE-252 vulnerabilities →