Technology · Netscape
Netscape Navigator vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 5 vulnerabilities in Netscape Navigator: 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-1999-0537, was published on 1 April 1998.
- Last 7 days
- 0
- Last 90 days
- 0
- Critical, all time
- 0
- Exploited in the wild
- 0
About Netscape Navigator
Early web browser developed by Netscape Communications Corporation for graphical internet browsing.
Latest Netscape Navigator vulnerabilities
- CVE-1999-0537: Microsoft Internet Explorer and Netscape Navigator insecure active content executionhighCVSS 7.5
- CVE-1999-1262: Netscape Navigator Java security model bypassmediumCVSS 5.1
- CVE-1999-0031: Microsoft Internet Explorer and Netscape Navigator information disclosure via JavaScriptlowCVSS 2.6
- CVE-1999-0141: Sun Microsystems Java arbitrary command execution in Bytecode VerifierlowCVSS 3.7
- CVE-1999-0142: Netscape Navigator and JDK Security Manager restriction bypasshighCVSS 7.5
Most severe Netscape Navigator vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-1999-0537: Microsoft Internet Explorer and Netscape Navigator insecure active content executionhighCVSS 7.5
- CVE-1999-0142: Netscape Navigator and JDK Security Manager restriction bypasshighCVSS 7.5
- CVE-1999-1262: Netscape Navigator Java security model bypassmediumCVSS 5.1
- CVE-1999-0141: Sun Microsystems Java arbitrary command execution in Bytecode VerifierlowCVSS 3.7
- CVE-1999-0031: Microsoft Internet Explorer and Netscape Navigator information disclosure via JavaScriptlowCVSS 2.6
Vulnerabilities per week
Nothing was published in the last eight weeks. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many Netscape Navigator vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/navigator)<a href="https://junglewise.ai/threats/technologies/navigator"><img src="https://junglewise.ai/threats/technologies/navigator/badge.svg" alt="Netscape Navigator vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/navigator.json, and this page as text at https://junglewise.ai/threats/technologies/navigator.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Netscape Navigator vulnerabilities", https://junglewise.ai/threats/technologies/navigator, 9 November 2026.