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."
CVE-2006-3122
NONECVSS 0.0
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 4%CVSS: —Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- —
- EG Score
- 0.0(none)
- EPSS
- 89.2%
- KEV
- Not listed
Published
August 9, 2006
Last Modified
April 16, 2026
References (18)
- security@debianhttp://bugs.debian.org/cgi-bin/bugreport.cgi?bug=380273
- security@debianhttp://secunia.com/advisories/21345
- security@debianhttp://secunia.com/advisories/21363
- security@debianhttp://secunia.com/advisories/21655
- security@debianhttp://securitytracker.com/id?1016755
- security@debianhttp://www.debian.org/security/2006/dsa-1143
- security@debianhttp://www.openbsd.org/errata.html#dhcpd
- security@debianhttp://www.securityfocus.com/bid/19348
- security@debianhttp://www.vupen.com/english/advisories/2006/3158
- af854a3a-2127-422b-91ae-364da2661108http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=380273
- af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/21345
- af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/21363
- af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/21655
- af854a3a-2127-422b-91ae-364da2661108http://securitytracker.com/id?1016755
- af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2006/dsa-1143
Frequently asked(4)
What is CVE-2006-3122?
CVE-2006-3122 is a none vulnerability published on August 9, 2006. 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…
When was CVE-2006-3122 disclosed?
CVE-2006-3122 was first published in the National Vulnerability Database on August 9, 2006, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2006-3122 actively exploited?
CVE-2006-3122 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 89.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2006-3122?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2006-3122, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
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