CVE-2026-45657
CriticalCVSS 9.8Exploitation Probability (EPSS)
Very high risk96th percentile - higher than 96% of all known CVEs
Summary
A use-after-free vulnerability in the Windows Kernel allows an unauthorized attacker to execute code remotely over a network.
Risk Assessment
An attacker can remotely execute code in kernel context, leading to full compromise of the Windows system.
Recommendation
Install the latest Windows security updates from Microsoft.
Other vulnerabilities in Windows Kernel
See all- CVE-2026-35420High
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
- CVE-2017-11847High
The Windows kernel vulnerability allows an attacker to run arbitrary code in kernel mode, which can lead to installing programs, changing or deleting data, and creating new accounts with full user rights.
- CVE-2017-8561High
The Windows kernel has a privilege escalation vulnerability due to the way it handles objects in memory. This affects multiple versions of Windows, including Windows 8.1, Windows 10, and Windows Server 2016.
- CVE-2026-49798Critical
Use-after-free vulnerability in the Windows kernel allows an unauthorized attacker to elevate privileges locally.
- CVE-2026-40369High
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
- CVE-2026-24289High
A use after free vulnerability in the Windows Kernel allows an authorized attacker to locally elevate privileges.
- CVE-2025-62215HighActively exploited
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Kernel allows an authorized attacker to elevate privileges locally.
- CVE-2024-38106HighActively exploited
A vulnerability in the Windows Kernel allows for elevation of privilege. The NVD description does not provide technical details or required user interaction.
- CVE-2024-30088HighActively exploited
A vulnerability in the Windows kernel allows elevation of privilege. This flaw can be exploited by a local attacker to gain higher privileges on the system.
- CVE-2024-21371High
Elevation of privilege vulnerability in the Windows kernel. Allows a local attacker to gain elevated privileges.
Original NVD description (English source)
Use after free in Windows Kernel allows an unauthorized attacker to execute code over a network.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS