CVE-2000-0543

CVE-2000-0543 is a medium-severity vulnerability in Pgp Certificate Server with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

The command port for PGP Certificate Server 2.5.0 and 2.5.1 allows remote attackers to cause a denial of service if their hostname does not have a reverse DNS entry and they connect to port 4000.

Frequently asked questions

What is CVE-2000-0543?
The command port for PGP Certificate Server 2.5.0 and 2.5.1 allows remote attackers to cause a denial of service if their hostname does not have a reverse DNS entry and they connect to port 4000.
How severe is CVE-2000-0543?
CVE-2000-0543 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2000-0543 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2000-0543?
CVE-2000-0543 primarily affects Pgp Certificate Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2000-0543?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2000-0543 published?
CVE-2000-0543 was published on 2000-06-14 and last updated on 2026-06-16.

References

Affected products (2)