Windows Virtual Trusted Platform Module Denial of Service Vulnerability

Security Vulnerability

Released: Jan 14, 2025

Assigning CNA
Microsoft
CVE.org link
CVE-2025-21280
Impact
Denial of Service
Max Severity
Important
Weakness
CVSS Source
Microsoft
Vector String
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C

Please see Common Vulnerability Scoring System for more information on the definition of these metrics.

Exploitability

The following table provides an exploitability assessment for this vulnerability at the time of original publication.

Publicly disclosed
No
Exploited
No
Exploitability assessment
Exploitation Less Likely

FAQ

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

A successful exploitation of this vulnerability via a medium integrity level exploit could allow an attacker to gain unauthorized access to system-level resources, potentially modify kernel memory, and execute arbitrary code with kernel-level privileges. This could lead to a full compromise of the system’s integrity, confidentiality, and availability.

Are there any additional steps that I need to follow to be protected from this vulnerability?

The changes to address this vulnerability updated Virtual Secure Mode components. The policy described in Guidance for blocking rollback of Virtualization-based Security (VBS) related security updates has been updated to account for the latest changes. If you deployed this policy, then you'll need to redeploy using the updated policy.

Acknowledgements

  • HongZhenhao with TianGong Team of Legendsec at Qi'anxin Group
Microsoft recognizes the efforts of those in the security community who help us protect customers through coordinated vulnerability disclosure. See Acknowledgements for more information.

Security Updates

To determine the support lifecycle for your software, see the Microsoft Support Lifecycle.

Release date Descending

Disclaimer

The information provided in the Microsoft Knowledge Base is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.

Revisions

How satisfied are you with the MSRC Security Update Guide?