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 certificate for a different web site, which could allow remote attackers to spoof a legitimate web site by compromising that site's DNS information.

Published: 2000-05-26 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2000-0517 is rated Moderate Risk (45.5/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.95%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2000-0517

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-30 1.49% 0.95% -0.54%
2 2025-03-29 0.95% 1.49% +0.54%
3 2025-03-17 — 0.95% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2000-0517

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2000-0517

Affected software / configurations for CVE-2000-0517

Vendor Product Version Raw CPE
netscape communicator 4.0 cpe:2.3:a:netscape:communicator:4.0:*:*:*:*:*:*:*
netscape communicator 4.5 cpe:2.3:a:netscape:communicator:4.5:*:*:*:*:*:*:*
netscape communicator 4.6 cpe:2.3:a:netscape:communicator:4.6:*:*:*:*:*:*:*
netscape communicator 4.7 cpe:2.3:a:netscape:communicator:4.7:*:*:*:*:*:*:*
netscape communicator 4.51 cpe:2.3:a:netscape:communicator:4.51:*:*:*:*:*:*:*
netscape communicator 4.61 cpe:2.3:a:netscape:communicator:4.61:*:*:*:*:*:*:*
netscape communicator 4.72 cpe:2.3:a:netscape:communicator:4.72:*:*:*:*:*:*:*
netscape communicator 4.73 cpe:2.3:a:netscape:communicator:4.73:*:*:*:*:*:*:*

References for CVE-2000-0517

cvelogic Threat Intelligence