CVE-2026-77178

Critical severity, CVSS 9.1. EPSS: 0.3% chance of exploitation in the next 30 days.

Oracle VM VirtualBox before 7.2.8 allows guest OS users to cause an out-of-bounds write in the host OS in pcnetReceiveNoSync in DevPCNet.cpp in the PCNet (Am79C970A) network device model.

Published 2026-10-06. Last modified 2026-10-06.