How severe is CVE-2000-0586?

CVE-2000-0586 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2000-0586 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2000-0586?

CVE-2000-0586 affects Dalnet Ircd. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2000-0586?

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-2000-0586 published?

CVE-2000-0586 was published on 2000-06-29 and last updated on 2026-06-16.

CVE-2000-0586

CVE-2000-0586 is a critical-severity vulnerability in Dalnet Ircd 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: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Dalnet Ircd
Published: 2000-06-29
Last modified: 2026-06-16

Description

Buffer overflow in Dalnet IRC server 4.6.5 allows remote attackers to cause a denial of service or execute arbitrary commands via the SUMMON command.

Frequently asked questions

What is CVE-2000-0586?: Buffer overflow in Dalnet IRC server 4.6.5 allows remote attackers to cause a denial of service or execute arbitrary commands via the SUMMON command.
How severe is CVE-2000-0586?: CVE-2000-0586 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2000-0586 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2000-0586?: CVE-2000-0586 affects Dalnet Ircd. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2000-0586?: 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-2000-0586 published?: CVE-2000-0586 was published on 2000-06-29 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:dalnet:ircd:4.6.5:*:*:*:*:*:*:*