Privilege escalation in Microsoft Windows secure kernel mode on ARM64



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2025-21325
CWE-ID CWE-732
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Windows
Operating systems & Components / Operating system

Windows Server
Operating systems & Components / Operating system

Vendor Microsoft

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Incorrect permission assignment for critical resource

EUVDB-ID: #VU102876

Risk: Low

CVSSv4.0: [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-21325

CWE-ID: CWE-732 - Incorrect Permission Assignment for Critical Resource

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to incorrect permission assignment for critical resource in Windows Secure Kernel mode on ARM64 systems. A local user can execute arbitrary code with elevated privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: before 10 21H2 10.0.19044.5371, 10 22H2 10.0.19045.5371, 11 22H2 10.0.22621.4751, 11 23H2 10.0.22631.4751, 11 24H2 10.0.26100.2894, 10 21H2 10.0.19044.5371, 10 21H2 10.0.19044.5371, 10 21H2 10.0.19044.5371, 10 21H2 10.0.19044.5371

Windows Server: before 2025 10.0.26100.2894

CPE2.3 External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-21325


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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