HIGH
CVE-1999-1189
NVD-CWE-OtherPublished: November 24, 1999· Updated: Jun 16, 2026
7.5
CVSS v3.1
Official 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.
Technical Analysis
CVE-1999-1189 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityP
IntegrityP
AvailabilityP
AV:N/AC:L/Au:N/C:P/I:P/A:P
Affected Vendors & Products
netscape2 product(s)
communicatornavigator
Source: NVD CPE · 2 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
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Rapid7 / Metasploit
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PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (8)
→
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
→
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
Quick Facts
CVE IDCVE-1999-1189
CVSS Score7.5 / 10
SeverityHIGH
WeaknessNVD-CWE-Other
CISA KEVNo
Affected1 vendor(s)
PublishedNov 24, 1999
Related CVEs (NVD-CWE-Other)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-1999-1189 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.