cve-2025-54109

About this tag
CVE-2025-54109 is an elevation-of-privilege vulnerability in the Windows Defender Firewall Service (MpsSvc). Microsoft describes it as a type confusion issue that allows an authorized local attacker to elevate privileges on the affected machine. The vulnerability is classified as an Elevation of Privilege (EoP) flaw, meaning an attacker with a valid account on the system could exploit it to gain higher-level access. This tag covers discussions, analysis, and mitigation guidance for CVE-2025-54109, including technical details from Microsoft's advisory and community troubleshooting. Users and IT administrators can find information on the vulnerability's impact, affected Windows versions, and steps to apply security updates or workarounds.

  1. CVE-2025-54109: Windows Defender Firewall Service Privilege Elevation

    CVE-2025-54109 Windows Defender Firewall Service Elevation of Privilege Vulnerability Summary What it is: CVE-2025-54109 is an elevation-of-privilege (EoP) vulnerability described by Microsoft as "Access of resource using incompatible type ('type confusion')" in the Windows Defender Firewall...
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    • cisa cve-2025-54109 defense in depth endpoint security exploit prevention extended security updates ioc detection kb updates mpssvc patch management privilege escalation svchost sysmon threat hunting type confusion windows defender firewall windows security
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    • Forum: Security Alerts