CVE-2025-54098: 
vulnerability analysis and mitigation

CVE-2025-54098 is an Elevation of Privilege (EoP) vulnerability affecting Windows Hyper-V, Microsoft's virtualization product. The vulnerability was disclosed in September 2025 as part of Microsoft's Patch Tuesday updates. It was assigned a CVSSv3 score of 7.8 and rated as Important by Microsoft (Tenable Blog, BleepingComputer).

The vulnerability is classified as an Elevation of Privilege vulnerability that affects Windows Hyper-V. Microsoft assessed it as 'Exploitation More Likely' according to their Exploitability Index. A local, authenticated attacker could exploit this vulnerability to elevate their privileges to SYSTEM level access (Tenable Blog).

Successful exploitation of this vulnerability would allow an authenticated attacker to elevate their privileges to SYSTEM level access on the affected system, potentially gaining complete control over the Hyper-V environment (Tenable Blog, GBHackers).

Microsoft has released patches for this vulnerability as part of their September 2025 Patch Tuesday updates. System administrators are strongly advised to apply these security updates promptly to mitigate the risk (BleepingComputer).