How severe is CVE-2004-0605?

CVE-2004-0605 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2004-0605 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2004-0605?

CVE-2004-0605 primarily affects Ircd-hybrid. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2004-0605?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2004-0605 published?

CVE-2004-0605 was published on 2004-12-06 and last updated on 2026-06-16.

CVE-2004-0605

CVE-2004-0605 is a medium-severity vulnerability in Ircd-hybrid 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. The underlying weakness is classified as CWE-16.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 7% (94th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-16
Affected product: Ircd-hybrid
Published: 2004-12-06
Last modified: 2026-06-16

Description

Non-registered IRC users using (1) ircd-hybrid 7.0.1 and earlier, (2) ircd-ratbox 1.5.1 and earlier, or (3) ircd-ratbox 2.0rc6 and earlier do not have a rate-limit imposed, which could allow remote attackers to cause a denial of service by repeatedly making requests, which are slowly dequeued.

Frequently asked questions

What is CVE-2004-0605?: Non-registered IRC users using (1) ircd-hybrid 7.0.1 and earlier, (2) ircd-ratbox 1.5.1 and earlier, or (3) ircd-ratbox 2.0rc6 and earlier do not have a rate-limit imposed, which could allow remote attackers to cause a denial of service by repeatedly making requests, which are slowly dequeued.
How severe is CVE-2004-0605?: CVE-2004-0605 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2004-0605 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2004-0605?: CVE-2004-0605 primarily affects Ircd-hybrid. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2004-0605?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2004-0605 published?: CVE-2004-0605 was published on 2004-12-06 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:ircd-hybrid:ircd-hybrid:*:*:*:*:*:*:*:*
cpe:2.3:a:ircd-ratbox:ircd-ratbox:*:*:*:*:*:*:*:*

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