Microsoft Windows Server 2025 vulnerabilities

CVE-2026-50384 [HIGH] CWE-362 CVE-2026-50384: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Clip Service allows an authorized attacker to elevate privileges locally.

CVE-2026-50403 [HIGH] CWE-362 CVE-2026-50403: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Runtime allows an authorized attacker to elevate privileges locally.

CVE-2026-50669 [HIGH] CWE-362 CVE-2026-50669: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Telephony Service allows an authorized attacker to elevate privileges locally.

CVE-2025-50172 [MEDIUM] CWE-770 CVE-2025-50172: Allocation of resources without limits or throttling in Windows DirectX allows an authorized attacke Allocation of resources without limits or throttling in Windows DirectX allows an authorized attacker to deny service over a network.

CVE-2025-53809 [MEDIUM] CWE-20 CVE-2025-53809: Improper input validation in Windows Local Security Authority Subsystem Service (LSASS) allows an au Improper input validation in Windows Local Security Authority Subsystem Service (LSASS) allows an authorized attacker to deny service over a network.

CVE-2026-32223 [MEDIUM] CWE-122 CVE-2026-32223: Heap-based buffer overflow in Windows USB Print Driver allows an unauthorized attacker to elevate pr Heap-based buffer overflow in Windows USB Print Driver allows an unauthorized attacker to elevate privileges with a physical attack.

CVE-2025-24996 [MEDIUM] CWE-73 CVE-2025-24996: External control of file name or path in Windows NTLM allows an unauthorized attacker to perform spo External control of file name or path in Windows NTLM allows an unauthorized attacker to perform spoofing over a network.

CVE-2026-42903 [MEDIUM] CWE-476 CVE-2026-42903: Null pointer dereference in Windows Kerberos allows an authorized attacker to deny service over a ne Null pointer dereference in Windows Kerberos allows an authorized attacker to deny service over a network.

CVE-2026-26155 [MEDIUM] CWE-126 CVE-2026-26155: Microsoft Local Security Authority Subsystem Service Information Disclosure Vulnerability Microsoft Local Security Authority Subsystem Service Information Disclosure Vulnerability

CVE-2026-49799 [MEDIUM] CWE-400 CVE-2026-49799: Uncontrolled resource consumption in Windows Local Security Authority Subsystem Service (LSASS) allo Uncontrolled resource consumption in Windows Local Security Authority Subsystem Service (LSASS) allows an authorized attacker to deny service over a network.

CVE-2026-54126 [MEDIUM] CWE-125 CVE-2026-54126: Out-of-bounds read in Windows RDP allows an unauthorized attacker to disclose information over a net Out-of-bounds read in Windows RDP allows an unauthorized attacker to disclose information over a network.

CVE-2025-21276 [HIGH] CWE-191 CVE-2025-21276: Windows MapUrlToZone Denial of Service Vulnerability Windows MapUrlToZone Denial of Service Vulnerability

CVE-2025-21207 [HIGH] CWE-400 CVE-2025-21207: Windows Connected Devices Platform Service (Cdpsvc) Denial of Service Vulnerability Windows Connected Devices Platform Service (Cdpsvc) Denial of Service Vulnerability

CVE-2026-45585 [MEDIUM] CWE-77 CVE-2026-45585: Microsoft is aware of a security feature bypass vulnerability in Windows publicly referred to as &qu Microsoft is aware of a security feature bypass vulnerability in Windows publicly referred to as "YellowKey". The proof of concept for this vulnerability has been made public violating coordinated vulnerability best practices. We are issuing this CVE to provide mitigation guidance that can be implemented to protect against this vulnerability until th

CVE-2025-59208 [HIGH] CWE-125 CVE-2025-59208: Out-of-bounds read in Windows MapUrlToZone allows an unauthorized attacker to disclose information o Out-of-bounds read in Windows MapUrlToZone allows an unauthorized attacker to disclose information over a network.

CVE-2025-48819 [HIGH] CWE-591 CVE-2025-48819: Sensitive data storage in improperly locked memory in Windows Universal Plug and Play (UPnP) Device Sensitive data storage in improperly locked memory in Windows Universal Plug and Play (UPnP) Device Host allows an authorized attacker to elevate privileges over an adjacent network.

CVE-2025-53139 [HIGH] CWE-319 CVE-2025-53139: Cleartext transmission of sensitive information in Windows Hello allows an unauthorized attacker to Cleartext transmission of sensitive information in Windows Hello allows an unauthorized attacker to bypass a security feature locally.

CVE-2025-58735 [HIGH] CWE-416 CVE-2025-58735: Use after free in Inbox COM Objects allows an unauthorized attacker to execute code locally. Use after free in Inbox COM Objects allows an unauthorized attacker to execute code locally.

CVE-2025-58732 [HIGH] CWE-416 CVE-2025-58732: Use after free in Inbox COM Objects allows an unauthorized attacker to execute code locally. Use after free in Inbox COM Objects allows an unauthorized attacker to execute code locally.

CVE-2026-55144 [HIGH] CWE-325 CVE-2026-55144: Missing cryptographic step in Windows CryptoAPI allows an authorized attacker to perform tampering l Missing cryptographic step in Windows CryptoAPI allows an authorized attacker to perform tampering locally.