Microsoft Windows: 5 exploited vulnerabilities (CVE-2025-30397, CVE-2025-30400, CVE-2025-32701, CVE-2025-32706, CVE-2025-32709)

CVE-2025-30397: Microsoft Windows Scripting Engine contains a type confusion vulnerability that allows an unauthorized attacker to execute code over a network via a specially crafted URL. CVE-2025-30400: Microsoft Windows DWM Core Library contains a use-after-free vulnerability that allows an authorized attacker to elevate privileges locally. CVE-2025-32701: Microsoft Windows Common Log File System (CLFS) Driver contains a use-after-free vulnerability that allows an authorized attacker to elevate privileges locally. CVE-2025-32706: Microsoft Windows Common Log File System (CLFS) Driver contains a heap-based buffer overflow vulnerability that allows an authorized attacker to elevate privileges locally. CVE-2025-32709: Microsoft Windows Ancillary Function Driver for WinSock contains a use-after-free vulnerability that allows an authorized attacker to escalate privileges to administrator. Added to CISA KEV on 2025-05-13.

Why this severity: CVSS 7.8 (CNA, v3.1); actively exploited (CISA KEV)

Started

May 13, 2025

Closed

May 13, 2025

CVEs

CVE-2025-30397CVE-2025-30400CVE-2025-32701CVE-2025-32706CVE-2025-32709

• Microsoft
• Windows
• CISA KEV

Notes & caveats

Derived from CISA KEV JSON feed catalogVersion 2026.10.21. CVSS from the CVE record (cvelistV5). Exact affected/fixed version strings are not always in the KEV record; verify against the vendor advisory URL. startedAt uses dateAdded (exploitation may have begun earlier; many entries are older CVEs newly confirmed as exploited in 2025).