CVE-2026-77178

Summary

This vulnerability allows guest OS users to perform an out-of-bounds write in the host OS, which could lead to a complete compromise of the host system.

Exploitability

Exploitation is relatively straightforward given the guest OS user privileges required, and the vulnerability is present in the PCNet network device model.

Blast radius

If exploited, this could result in a complete compromise of the host system, potentially leading to data loss or system corruption.

Detection

No reliable host or network indicator is derivable from the published description.

Prioritized remediation

Upgrade to VirtualBox 7.2.8 or later.

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.