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CVE-2026-77178

Critical

Description

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.

SeverityCritical
CVSS9.1
Exploit probability—
ProductVM VirtualBox
PublishedOct 6, 2026
First seenOct 6, 2026
Weakness typeCWE-787Out-of-bounds write

How to fix

Update
  • Oracle VM VirtualBox7.2.8 or later

Affected products

ProductAffected versionsFixed in
Oracle VM VirtualBoxNo range specified7.2.8

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