CVE-2013-6230: ISC BIND

Medium severity, CVSS 6.8. EPSS: 5.7% chance of exploitation in the next 30 days.

The Winsock WSAIoctl API in Microsoft Windows Server 2008, as used in ISC BIND 9.6-ESV before 9.6-ESV-R10-P1, 9.8 before 9.8.6-P1, 9.9 before 9.9.4-P1, 9.9.3-S1, 9.9.4-S1, and other products, does not properly support the SIO_GET_INTERFACE_LIST command for netmask 255.255.255.255, which allows remote attackers to bypass intended IP address restrictions by leveraging misinterpretation of this netmask as a 0.0.0.0 netmask.

Affected products

• ISC BIND: version 9.6 only; version 9.8.0 only; version 9.8.1 only; version 9.8.2 only; version 9.8.3 only; version 9.8.4 only; …

Published 2013-11-08. Last modified 2026-06-17.