Microsoft IIS 4.0 ASP File Source information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Microsoft IIS 4.0. Affected is an unknown function of the component ASP File Handler. Such manipulation leads to information disclosure (Source). This vulnerability is referenced as CVE-2000-0025. No exploit is available. This vulnerability has a historic impact due to its background and reception. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in Microsoft IIS 4.0 (Web Server) and classified as critical. Affected by this issue is some unknown functionality of the component ASP File Handler. The manipulation with an unknown input leads to a information disclosure vulnerability (Source). Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. CVE summarizes:

IIS 4.0 and Site Server 3.0 allow remote attackers to read source code for ASP files if the file is in a virtual directory whose name includes extensions such as .com, .exe, .sh, .cgi, or .dll, aka the "Virtual Directory Naming" vulnerability.

The weakness was published 12/21/1999 by Hunger with Microsoft as MS99-058 as confirmed bulletin (Technet). The advisory is shared for download at technet.microsoft.com. This vulnerability is handled as CVE-2000-0025. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 04/20/2026). The MITRE ATT&CK project declares the attack technique as T1592. This vulnerability has a historic impact due to its background and reception.

After immediately, there has been an exploit disclosed.

Applying the patch MS99-058 is able to eliminate this problem. The bugfix is ready for download at technet.microsoft.com.

The vulnerability is also documented in the databases at X-Force (4392), SecurityFocus (BID 882†), OSVDB (8098†) and Vulnerability Center (SBV-3058†). support.microsoft.com is providing further details. Similar entry is available at VDB-15079. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: Source
Class: Information disclosure / Source
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Patch: MS99-058

Timelineinfo

12/21/1999 🔍
12/21/1999 +0 days 🔍
12/21/1999 +0 days 🔍
12/21/1999 +0 days 🔍
12/21/1999 +0 days 🔍
12/01/2003 +1441 days 🔍
04/09/2004 +129 days 🔍
06/22/2014 +3726 days 🔍
04/20/2026 +4319 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS99-058
Researcher: Hunger
Organization: Microsoft
Status: Confirmed

CVE: CVE-2000-0025 (🔍)
GCVE (CVE): GCVE-0-2000-0025
GCVE (VulDB): GCVE-100-15080
X-Force: 4392
SecurityFocus: 882 - Microsoft IIS Virtual Directory Naming Vulnerability
OSVDB: 8098 - Microsoft IIS Virtual Directory ASP Source Disclosure
Vulnerability Center: 3058 - [MS99-058] IIS 4.0 and Site Server 3.0 ASP Files Source Code Disclosure, Medium

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 06/22/2014 16:14
Updated: 04/20/2026 00:34
Changes: 06/22/2014 16:14 (69), 05/17/2019 12:20 (3), 04/20/2026 00:34 (16)
Complete: 🔍
Cache ID: 216::103

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