SB2025090962 - Multiple vulnerabilities in Microsoft Windows Defender Firewall Service
Published: September 9, 2025
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 6 secuirty vulnerabilities.
1) Type Confusion (CVE-ID: CVE-2025-54094)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a type confusion error in Windows Defender Firewall Service. A local administrator can pass specially crafted data to the application, trigger a type confusion error and gain elevated privileges on the target system.
2) Type Confusion (CVE-ID: CVE-2025-54109)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a type confusion error in Windows Defender Firewall Service. A local administrator can pass specially crafted data to the application, trigger a type confusion error and gain elevated privileges on the target system.
3) Type Confusion (CVE-ID: CVE-2025-54915)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a type confusion error in Windows Defender Firewall Service. A local administrator can pass specially crafted data to the application, trigger a type confusion error and gain elevated privileges on the target system.
4) Type Confusion (CVE-ID: CVE-2025-54104)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a type confusion error in Windows Defender Firewall Service. A local administrator can pass specially crafted data to the application, trigger a type confusion error and gain elevated privileges on the target system.
5) Type Confusion (CVE-ID: CVE-2025-53808)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a type confusion error in Windows Defender Firewall Service. A local administrator can pass specially crafted data to the application, trigger a type confusion error and gain elevated privileges on the target system.
6) Type Confusion (CVE-ID: CVE-2025-53810)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a type confusion error in Windows Defender Firewall Service. A local administrator can pass specially crafted data to the application, trigger a type confusion error and gain elevated privileges on the target system.
Remediation
Install update from vendor's website.
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-54094
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-54109
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-54915
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-54104
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-53808
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-53810