CVE-1999-0407

CRITICAL

By default, IIS 4.0 has a virtual directory /IISADMPWD which contains files that can be used as proxies for brute force password attacks, or to identify valid users on the system.

Affects 1 product across 1 vendor.

CVSS 2.010.0
EPSS5.1%
Percentile92th
PatchUnknown
CVSS Vector — Plain English Remotely exploitable over the network, low complexity.
◆ AI Analysis — automated analysis, not human-reviewed

This vulnerability was disclosed in 1999. A critical vulnerability affects Microsoft systems (CVE-1999-0407). No public exploit code is currently available. Isolate affected systems if patching is not feasible.

BSID: BS-1999-GLOBAL-307831-C • Model: rule-based-v1 • Confidence: MEDIUM

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Frequently Asked Questions
What is CVE-1999-0407?
This vulnerability was disclosed in 1999. A critical vulnerability affects Microsoft systems (CVE-1999-0407). No public exploit code is currently available. Isolate affected systems if patching is not feasible.
What is the CVSS score for CVE-1999-0407?
CVE-1999-0407 has CVSS 10.0 (Critical). Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C. EPSS: 5.1%.
Is CVE-1999-0407 actively exploited?
No confirmed active exploitation of CVE-1999-0407 as of 2026-06-20.
How do I remediate CVE-1999-0407?
Priority: MEDIUM.
What systems are affected by CVE-1999-0407?
CVE-1999-0407 affects Microsoft Internet Information Server.
Vulnerability Details
CVE IDCVE-1999-0407
BSIDBS-1999-GLOBAL-307831-C BreachSpider Global ID
CVSS VectorAV:N/AC:L/Au:N/C:C/I:C/A:C
Published1999-02-09
Last Modified2026-06-16
ICS Relevance0%
SourceNVD
Official Description

By default, IIS 4.0 has a virtual directory /IISADMPWD which contains files that can be used as proxies for brute force password attacks, or to identify valid users on the system.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

Vulnerability details: By default, IIS 4.0 has a virtual directory /IISADMPWD which contains files that can be used as proxies for brute force password attacks, or to identify valid users on the system. CVSS vector: AV:N/AC:L/Au:N/C:C/I:C/A:C.

Exploitation Likelihood: LOW

Affected Products
VendorProductAffected Versions
Microsoft Internet Information Server 4.0
Remediation

No official vendor advisory link on record. See the CVE record →

Threat Intelligence
● Threat Intelligence Validated: October 2026 | Threat Age: 10118 Days
CISA known-exploitedNot in KEV catalog
Public ExploitNot confirmed
PoC CodeNot confirmed
AI Enrichment Record — provenance & audit hash
Modelrule-based-v1
ConfidenceMEDIUM
Enriched At2026-05-24
SHA-512 Audit Hash5ddd10a16f9322fb806bd000f24f29eb0f0bc3a7fe00bb372bf05374c7ac05d525856f6a0eacfb2344c0573be9ff190270ee7480830c08e826e7472f7b1205dd
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