SB2025091008 - Multiple vulnerabilities in Microsoft MapUrlToZone

Description

This security bulletin contains information about 2 vulnerabilities.

1) Protection Mechanism Failure (CVE-ID: CVE-2025-54917)

CWE-ID: CWE-693 - Protection Mechanism Failure

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to insufficient implementation of security measures in MapUrlToZone. A remote attacker can bypass implemented security restrictions and gain access to sensitive information on the system.

2) Improper Resolution of Path Equivalence (CVE-ID: CVE-2025-54107)

CWE-ID: CWE-41 - Improper Resolution of Path Equivalence

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to improper resolution of path equivalence in MapUrlToZone. A remote attacker can bypass the MapURLToZone method and gain access to sensitive information on the system.

Remediation

Install update from vendor's website.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-54917
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-54107