CVE-2007-4406

CVE-2007-4406 is a high-severity vulnerability in Universal Ircd Ircu with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

ircu 2.10.12.01 through 2.10.12.04 does not remove ops privilege after a join from a server with an older timestamp (TS), which allows remote attackers to gain control of a channel during a split.

Frequently asked questions

What is CVE-2007-4406?
ircu 2.10.12.01 through 2.10.12.04 does not remove ops privilege after a join from a server with an older timestamp (TS), which allows remote attackers to gain control of a channel during a split.
How severe is CVE-2007-4406?
CVE-2007-4406 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2007-4406 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-4406?
CVE-2007-4406 primarily affects Universal Ircd Ircu. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2007-4406?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2007-4406 published?
CVE-2007-4406 was published on 2007-08-18 and last updated on 2026-06-16.

References

Affected products (4)

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