CVE-2012-3570: Buffer overflow in ISC DHCP 4.2.x before 4.2.4-P1, when DHCPv6 mode is enabled, allows remote attackers to...

Security readout for executives and security teams

This flaw can let a remote attacker crash an affected ISC DHCP server if DHCPv6 mode is enabled. The likely business impact is network service disruption, especially where IPv6 address assignment depends on ISC DHCP. The bundle does not provide CVSS, CWE, or evidence of active exploitation. Exposure is most likely on systems running ISC DHCP 4.2.x before 4.2.4-P1 with DHCPv6 enabled. Internet exposure is not required if attackers can reach the DHCPv6 service from local or adjacent networks. Treat this as a reliability risk for IPv6 network operations. Prioritize remediation for DHCP servers supporting production networks, remote offices, or critical infrastructure segments. It is not KEV-listed in the provided bundle, so urgency should be driven by exposure and operational dependency. Mitigation focus: Upgrade affected ISC DHCP 4.2.x deployments to 4.2.4-P1 or later vendor packages.; Apply relevant distribution security updates from openSUSE, Mandriva, Gentoo, or your vendor.; Disable DHCPv6 mode where it is not operationally required..

Prepared

Jun 24, 2026, 12:34 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.