SB2025011540 - Multiple vulnerabilities in Microsoft MapUrlToZone

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Improper Resolution of Path Equivalence (CVE-ID: CVE-2025-21328)

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 trick a victim to open a specially crafted file and gain access to sensitive information on the system.

2) Improper Resolution of Path Equivalence (CVE-ID: CVE-2025-21219)

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 trick a victim to open a specially crafted file and gain access to sensitive information on the system.

3) Improper Resolution of Path Equivalence (CVE-ID: CVE-2025-21329)

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 trick a victim to open a specially crafted file and gain access to sensitive information on the system.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-21328
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-21219
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-21329