CVE-1999-1189

Name: CVE-1999-1189
Creator: NVD / NIST
Published: 1999-11-24T05:00:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.52%

Last modified Jun 16, 2026

CVE-1999-1189 is a vulnerability of currently unknown severity. Buffer overflow in Netscape Navigator/Communicator 4.7 for Windows 95 and Windows 98 allows remote attackers to cause a denial of service, and possibly execute arbitrary commands, via a long argument after the ? character in a URL that references an .asp, .cgi, .html, or .pl file.. EPSS estimates a 2.52% chance of exploitation in the next 30 days.

Description

Buffer overflow in Netscape Navigator/Communicator 4.7 for Windows 95 and Windows 98 allows remote attackers to cause a denial of service, and possibly execute arbitrary commands, via a long argument after the ? character in a URL that references an .asp, .cgi, .html, or .pl file.

Metrics

EPSS Probability

2.52%

82.8th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Netscape	Communicator	4.7
Netscape	Navigator	4.7

References

http://www.securityfocus.com/archive/1/36306Exploit, Vendor Advisory
http://www.securityfocus.com/archive/1/36608Vendor Advisory
http://www.securityfocus.com/bid/822Exploit, Patch, Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/7884
http://www.securityfocus.com/archive/1/36306Exploit, Vendor Advisory
http://www.securityfocus.com/archive/1/36608Vendor Advisory
http://www.securityfocus.com/bid/822Exploit, Patch, Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/7884

Timeline

Published: Nov 24, 1999
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-1999-1189?

How severe is CVE-1999-1189?

Severity scoring for CVE-1999-1189 is pending analysis. The EPSS model estimates a 2.52% probability of exploitation in the next 30 days.

How do I fix CVE-1999-1189?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-1999-1189?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST