MSRC compact vulnerability detail

CVE-2025-21321 · Windows Kernel Memory Information Disclosure Vulnerability

No description was published by MSRC.

Severity
Important
Impact
Information Disclosure
CVSS
5.5 base · 4.8 temporal
Release
2025-01-14
Signals
Windows Kernel Memory Information Disclosure Exploited: No Publicly disclosed: No Exploitability: Exploitation Less Likely
CWE
Patch Diff
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Resolved binary override
Use this when the MSRC module name cannot be mapped automatically or the resolved binary looks wrong.
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Description
No description was published by MSRC.
FAQ / Articles
FAQ
What type of information could be disclosed by this vulnerability? Exploiting this vulnerability could allow the disclosure of certain memory address within kernel space. Knowing the exact location of kernel memory could be potentially leveraged by an attacker for other malicious activities.
FAQ
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.