Vulnerability Report

CVE-1999-1189

Title: Netscape Navigator/Communicator 4.7 long-argument overflow causes DoS and possible RCE

Memory Corruption

Proof Of Concept

No public PoC currently indexed for CVE-1999-1189.

CWE Category NVD-CWE-noinfo

Published Date Nov 24, 1999

Modified Date Apr 16, 2026

Exploit Status Not Found

Score 7.5 CVSS v2.0

Exploit Probability (EPSS)

2.35%

Vulnerability Summary

CVE-1999-1189: 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.

Impacted Vendors

netscape 2

cloudera 1

Reference Links

http://www.securityfocus.com/archive/1/36306 http://www.securityfocus.com/archive/1/36608 http://www.securityfocus.com/bid/822 https://exchange.xforce.ibmcloud.com/vulnerabilities/7884 http://www.securityfocus.com/archive/1/36306 http://www.securityfocus.com/archive/1/36608 http://www.securityfocus.com/bid/822 https://exchange.xforce.ibmcloud.com/vulnerabilities/7884

CVSS v2.0

Source Entity [email protected]

Severity HIGH

7.5

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:N/AC:L/Au:N/C:P/I:P/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-1999-1189 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

April 16, 2026 MODIFIED

Vulnerability data updated via NVD.

April 03, 2025 MODIFIED

Vulnerability data or affected products updated.

November 24, 1999 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector N/A

Complexity N/A

Privileges N/A

Interaction NONE

CVSS Vector String


                                    AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected Stack

No specific products linked.