How severe is CVE-2001-0507?

CVE-2001-0507 has a CVSS 2.0 base score of 7.2, rated high severity.

Is CVE-2001-0507 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2001-0507?

CVE-2001-0507 affects Microsoft Internet Information Services. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2001-0507?

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-2001-0507 published?

CVE-2001-0507 was published on 2001-09-20 and last updated on 2026-06-16.

CVE-2001-0507

CVE-2001-0507 is a high-severity vulnerability in Microsoft Internet Information Services with a CVSS 2.0 base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.2)
EPSS exploit prediction: 9% (95th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft Internet Information Services
Published: 2001-09-20
Last modified: 2026-06-16

Description

IIS 5.0 uses relative paths to find system files that will run in-process, which allows local users to gain privileges via a Trojan horse file, aka the "System file listing privilege elevation" vulnerability.

Frequently asked questions

What is CVE-2001-0507?: IIS 5.0 uses relative paths to find system files that will run in-process, which allows local users to gain privileges via a Trojan horse file, aka the "System file listing privilege elevation" vulnerability.
How severe is CVE-2001-0507?: CVE-2001-0507 has a CVSS 2.0 base score of 7.2, rated high severity.
Is CVE-2001-0507 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2001-0507?: CVE-2001-0507 affects Microsoft Internet Information Services. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2001-0507?: 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-2001-0507 published?: CVE-2001-0507 was published on 2001-09-20 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:microsoft:internet_information_services:5.0:*:*:*:*:*:*:*

More vulnerabilities in Microsoft Internet Information Services

CVE-2010-3972 — Critical (CVSS 10.0): Heap-based buffer overflow in the TELNET_STREAM_CONTEXT::OnSendData function in ftpsvc.dll in Microsoft FTP Service 7.0…
CVE-2008-4301 — Critical (CVSS 10.0): A certain ActiveX control in iisext.dll in Microsoft Internet Information Services (IIS) allows remote attackers to set…
CVE-2007-2815 — Critical (CVSS 10.0): The "hit-highlighting" functionality in webhits.dll in Microsoft Internet Information Services (IIS) Web Server 5.0…
CVE-2003-0224 — Critical (CVSS 10.0): Buffer overflow in ssinc.dll for Microsoft Internet Information Services (IIS) 5.0 allows local users to execute…
CVE-1999-0233 — Critical (CVSS 10.0): IIS 1.0 allows users to execute arbitrary commands using .bat or .cmd files.
CVE-2017-7269 — Critical (CVSS 9.8): Buffer overflow in the ScStoragePathFromUrl function in the WebDAV service in Internet Information Services (IIS) 6.0…

All CVEs affecting Microsoft Internet Information Services →