Microsoft Windows 11 23H2 vulnerabilities

CVE-2025-27484 [HIGH] CWE-591 CVE-2025-27484: 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 a network.

CVE-2025-26649 [HIGH] CWE-362 CVE-2025-26649: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Secure Channel allows an authorized attacker to elevate privileges locally.

CVE-2025-26663 [HIGH] CWE-416 CVE-2025-26663: Use after free in Windows LDAP - Lightweight Directory Access Protocol allows an unauthorized attack Use after free in Windows LDAP - Lightweight Directory Access Protocol allows an unauthorized attacker to execute code over a network.

CVE-2025-21222 [HIGH] CWE-122 CVE-2025-21222: Heap-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to execute c Heap-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to execute code over a network.

CVE-2025-21221 [HIGH] CWE-122 CVE-2025-21221: Heap-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to execute c Heap-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to execute code over a network.

CVE-2025-27478 [HIGH] CWE-122 CVE-2025-27478: Heap-based buffer overflow in Windows Local Security Authority (LSA) allows an authorized attacker t Heap-based buffer overflow in Windows Local Security Authority (LSA) allows an authorized attacker to elevate privileges locally.

CVE-2025-26688 [HIGH] CWE-121 CVE-2025-26688: Stack-based buffer overflow in Microsoft Virtual Hard Drive allows an authorized attacker to elevate Stack-based buffer overflow in Microsoft Virtual Hard Drive allows an authorized attacker to elevate privileges locally.

CVE-2025-29809 [HIGH] CWE-922 CVE-2025-29809: Insecure storage of sensitive information in Windows Kerberos allows an authorized attacker to bypas Insecure storage of sensitive information in Windows Kerberos allows an authorized attacker to bypass a security feature locally.

CVE-2025-29824 [HIGH] CWE-416 CVE-2025-29824: Use after free in Windows Common Log File System Driver allows an authorized attacker to elevate pri Use after free in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.

CVE-2025-24058 [HIGH] CWE-20 CVE-2025-24058: Improper input validation in Windows DWM Core Library allows an authorized attacker to elevate privi Improper input validation in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

CVE-2025-24062 [HIGH] CWE-20 CVE-2025-24062: Improper input validation in Windows DWM Core Library allows an authorized attacker to elevate privi Improper input validation in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

CVE-2025-24074 [HIGH] CWE-20 CVE-2025-24074: Improper input validation in Windows DWM Core Library allows an authorized attacker to elevate privi Improper input validation in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

CVE-2025-27490 [HIGH] CWE-122 CVE-2025-27490: Heap-based buffer overflow in Windows Bluetooth Service allows an authorized attacker to elevate pri Heap-based buffer overflow in Windows Bluetooth Service allows an authorized attacker to elevate privileges locally.

CVE-2025-26665 [HIGH] CWE-591 CVE-2025-26665: Sensitive data storage in improperly locked memory in Windows upnphost.dll allows an authorized atta Sensitive data storage in improperly locked memory in Windows upnphost.dll allows an authorized attacker to elevate privileges locally.

CVE-2025-24060 [HIGH] CWE-20 CVE-2025-24060: Improper input validation in Windows DWM Core Library allows an authorized attacker to elevate privi Improper input validation in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

CVE-2025-26641 [HIGH] CWE-400 CVE-2025-26641: Uncontrolled resource consumption in Windows Cryptographic Services allows an unauthorized attacker Uncontrolled resource consumption in Windows Cryptographic Services allows an unauthorized attacker to deny service over a network.

CVE-2025-27732 [HIGH] CWE-591 CVE-2025-27732: Sensitive data storage in improperly locked memory in Windows Win32K - GRFX allows an authorized att Sensitive data storage in improperly locked memory in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.

CVE-2025-27481 [HIGH] CWE-121 CVE-2025-27481: Stack-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to execute Stack-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to execute code over a network.

CVE-2025-21205 [HIGH] CWE-122 CVE-2025-21205: Heap-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to execute c Heap-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to execute code over a network.

CVE-2025-24073 [HIGH] CWE-20 CVE-2025-24073: Improper input validation in Windows DWM Core Library allows an authorized attacker to elevate privi Improper input validation in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.