A vulnerability in the way OpenBSD handles IPv6 data packets exposes systems running the traditionally secure open-source operating system to serious attack. A memory corruption vulnerability error exists in the OpenBSD code that handles IPv6 packets, Core Security Technologies said in an alert published Tuesday. Exploiting the flaw could let an attacker commandeer a vulnerable system, according to Core, which said it discovered the issue and crafted sample exploit code. ZdNet Downunder has more.