CVE-2021-34458
CriticalCVSS 9.9Exploitation Probability (EPSS)
High risk83th percentile - higher than 83% of all known CVEs
Summary
Remote code execution vulnerability in the Windows kernel. It could allow an attacker to execute code in the kernel context.
Risk Assessment
An attacker could exploit this vulnerability to gain full control of the system, potentially leading to malware installation or data theft.
Recommendation
Install the latest Windows security updates.
Other vulnerabilities in Windows Kernel
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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.
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Use-after-free vulnerability in the Windows kernel allows an unauthorized attacker to elevate privileges locally.
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A use-after-free vulnerability in the Windows Kernel allows an unauthorized attacker to execute code remotely over a network.
- 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.
Original NVD description (English source)
Windows Kernel Remote Code Execution Vulnerability