CVE-1999-0387: High severity Microsoft Windows 95 vulnerability

Published Nov 29, 1999
·
Updated

A legacy credential caching mechanism used in Windows 95 and Windows 98 systems allows attackers to read plaintext network passwords.

Affected Software

2 affected components
Microsoft Windows 95
Microsoft Windows 98=gold

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Configuration

    Disable the legacy credential caching mechanism on Windows 95 and Windows 98 systems to prevent storage of plaintext network passwords.

    Microsoft Windows 95/98 credential caching legacy credential caching = disabled
  2. Compensating control

    Isolate Windows 9x systems from untrusted networks or restrict their network access via firewall rules/ACLs to reduce the risk of attackers reading cached plaintext network passwords.

  3. Operational

    Assume network passwords may have been exposed and change/rotate any network credentials used by Windows 95/98 systems after disabling the credential caching mechanism.

Event History

Nov 29, 1999
CVE Published
05:00 AM
Data Sourced
via NVD·05:00 AM
DescriptionSeverityWeaknessAffected Software
Jul 12, 2000
CVE Published
via MITRE·08:00 AM
Data Sourced
via MITRE·08:00 AM
Description

Frequently Asked Questions

1

What is the severity of CVE-1999-0387?

CVE-1999-0387 has a medium severity rating due to the potential exposure of plaintext network passwords.

2

How do I fix CVE-1999-0387?

To fix CVE-1999-0387, users should upgrade from Windows 95 or Windows 98 to a supported version of Windows.

3

Which software is affected by CVE-1999-0387?

CVE-1999-0387 affects Microsoft Windows 95 and Windows 98 with the Gold version.

4

What are the risks associated with CVE-1999-0387?

The risks associated with CVE-1999-0387 include unauthorized access to network resources due to plaintext password exposure.

5

Is CVE-1999-0387 still relevant today?

CVE-1999-0387 is considered less relevant today due to the outdated nature of the affected operating systems, but it highlights the importance of secure credential storage.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203