How severe is CVE-1999-0220?

CVE-1999-0220 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-1999-0220 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-1999-0220?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-1999-0220 published?

CVE-1999-0220 was published on 1999-01-01 and last updated on 2026-06-16.

CVE-1999-0220

CVE-1999-0220 is a critical-severity vulnerability with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Published: 1999-01-01
Last modified: 2026-06-16

Description

Attackers can do a denial of service of IRC by crashing the server.

Frequently asked questions

What is CVE-1999-0220?: Attackers can do a denial of service of IRC by crashing the server.
How severe is CVE-1999-0220?: CVE-1999-0220 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-1999-0220 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-1999-0220?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-1999-0220 published?: CVE-1999-0220 was published on 1999-01-01 and last updated on 2026-06-16.

References

https://www.cve.org/CVERecord?id=CVE-1999-0220