CVE-2025-32718: 
vulnerability analysis and mitigation

CVE-2025-32718 is a Windows SMB Client Elevation of Privilege Vulnerability disclosed in June 2025. This Important-severity vulnerability in Windows SMB allows an authorized attacker to elevate privileges locally. The vulnerability was first published on June 10, 2025, and received a CVSS v3.1 base score of 7.8 (HIGH) (Wiz, NVD).

The vulnerability is classified as an Integer overflow or wraparound vulnerability in Windows SMB, affecting the Windows SMB client component. Microsoft has assigned it two Common Weakness Enumeration (CWE) identifiers: CWE-122 (Heap-based Buffer Overflow) and CWE-190 (Integer Overflow or Wraparound). The vulnerability requires local access and low privileges to exploit, but requires no user interaction for successful exploitation. The CVSS vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H (NVD, Wiz).

If successfully exploited, this vulnerability allows an authorized attacker to elevate privileges locally on affected systems. The high CVSS score of 7.8 indicates significant potential impact on the confidentiality, integrity, and availability of the system (NVD, Wiz).

Microsoft has released patches for this vulnerability as part of the June 2025 Patch Tuesday security updates. Organizations are advised to apply these security updates promptly to address the vulnerability (Wiz).