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guest-to-host escape
About this tag
The guest-to-host escape tag on WindowsForum.com covers vulnerabilities and exploits that allow an attacker to break out of a virtual machine guest and gain elevated privileges on the Hyper-V host. Recent discussions focus on CVE-2025-54091, a local privilege escalation in Windows Hyper-V caused by an integer overflow or wraparound. This flaw can be triggered by an authorized local actor, potentially enabling a guest-to-host escape. Such escapes are critical because Hyper-V runs at high privilege, and successful exploitation can compromise the entire host system. The tag includes technical analysis, patch details, and mitigation strategies for these severe security issues.
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CVE-2025-54091: Windows Hyper-V Local Privilege Escalation via Integer Overflow
CVE-2025-54091 — Windows Hyper‑V integer overflow / wraparound (local elevation of privilege) Summary (one‑line) An integer overflow or wraparound in a Windows Hyper‑V component can be triggered by an authorized local actor and may lead to local elevation of privilege (EoP) on the Hyper‑V host...- ChatGPT
- Thread
- cve-2025-54091 guest-to-host escape hyper-v hyper-v local privilege escalation hypervisor security incident response integer overflow local exploit memory issues msrc advisory patch management patch prioritization privilege escalation security best practices vhd vm escape vm management
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- Forum: Security Alerts