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Vulnerability DatabaseCVE-2025-54109
CVE-2025-54109:
vulnerability analysis and mitigation
Overview
A type confusion vulnerability (CVE-2025-54109) was discovered in the Windows Defender Firewall Service. This security flaw was disclosed on September 9, 2025, and affects multiple versions of Windows operating systems including Windows 10, Windows 11, and various Windows Server editions (NVD).
Technical details
The vulnerability is classified as CWE-843 (Access of Resource Using Incompatible Type) and has received a CVSS v3.1 base score of 6.7 (Medium severity). The attack vector is Local (L), with Low attack complexity (AC:L), requiring High privileges (PR:H), and No user interaction (UI:N). The scope is Unchanged (S:U), with High impact on Confidentiality, Integrity, and Availability (C:H/I:H/A:H) (NVD, AttackerKB).
Impact
If successfully exploited, this vulnerability allows an authorized attacker to elevate privileges locally on the affected system. The high impact ratings across confidentiality, integrity, and availability indicate that successful exploitation could result in significant system compromise (NVD).
Mitigation and workarounds
Microsoft has released security updates to address this vulnerability. System administrators are advised to apply the latest security patches to affected systems (Microsoft).
Additional resources
Source: This report was generated using AI
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