CVE-2025-48807

FAQ

According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?

A race condition is triggered when the admin begins administering from the host system and not a guest or nested guest.

According to the CVSS metric, the attack vector is local (AV:L). Why does the CVE title indicate that this is a remote code execution?

The word Remote in the title refers to the location of the attacker. This type of exploit is sometimes referred to as Arbitrary Code Execution (ACE). The attack itself is carried out locally. The vulnerable endpoint is only available over the local VM interface as all external communication is blocked. This means an attacker needs to execute code from the local machine to exploit the vulnerability.

According to the CVSS metric, user interaction is required (UI:R) and privileges required is Low (PR:L). What does that mean for this vulnerability?

At the time the authorized attacker sends a specially crafted request an administrator needs to take action on the host.

According to the CVSS metric, successful exploitation could lead to a scope change (S:C). What does this mean for this vulnerability?

An attacker on a nested guest VM who successfully exploited the vulnerability could escape their VM and gain admin privilege on the guest that is serving as the host.

For diagrams and more detailed information about nested VMs please see Run Hyper-V in a Virtual Machine with Nested Virtualization.