How severe is CVE-2006-3122?

CVE-2006-3122 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2006-3122 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-3122?

CVE-2006-3122 affects Isc Dhcpd. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2006-3122?

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

When was CVE-2006-3122 published?

CVE-2006-3122 was published on 2006-08-09 and last updated on 2026-06-16.

CVE-2006-3122

CVE-2006-3122 is a medium-severity vulnerability in Isc Dhcpd 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-399.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 4% (89th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Isc Dhcpd
Published: 2006-08-09
Last modified: 2026-06-16

Description

The supersede_lease function in memory.c in ISC DHCP (dhcpd) server 2.0pl5 allows remote attackers to cause a denial of service (application crash) via a DHCPDISCOVER packet with a 32 byte client-identifier, which causes the packet to be interpreted as a corrupt uid and causes the server to exit with "corrupt lease uid."

Frequently asked questions

What is CVE-2006-3122?: The supersede_lease function in memory.c in ISC DHCP (dhcpd) server 2.0pl5 allows remote attackers to cause a denial of service (application crash) via a DHCPDISCOVER packet with a 32 byte client-identifier, which causes the packet to be interpreted as a corrupt uid and causes the server to exit with "corrupt lease uid."
How severe is CVE-2006-3122?: CVE-2006-3122 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2006-3122 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-3122?: CVE-2006-3122 affects Isc Dhcpd. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2006-3122?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2006-3122 published?: CVE-2006-3122 was published on 2006-08-09 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:isc:dhcpd:*:*:*:*:*:*:*:*

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