Windows Kernel Elevation of Privilege Vulnerability in Microsoft Products

CVE-2026-40369

What is CVE-2026-40369?

CVE-2026-40369 is a critical vulnerability found within the Windows Kernel, which is fundamental to the operation of Microsoft operating systems. This flaw stems from an untrusted pointer dereference, permitting authorized attackers to escalate their privileges locally on affected systems. The implications of this vulnerability are significant, as it could enable malicious actors to perform unauthorized actions, potentially leading to full control over compromised systems. This is particularly concerning for organizations as it undermines the integrity of access controls, allowing attackers to exploit this flaw to execute arbitrary code with elevated privileges, thereby compromising sensitive data and system stability.

Potential impact of CVE-2026-40369

1. Unauthorized Access to Sensitive Data: Exploitation of this vulnerability may grant attackers elevated access to sensitive information, exposing confidential business data and user credentials.

2. System Compromise and Malware Deployment: With elevated privileges, attackers can deploy malware or other malicious software, causing further damage to the organization's network infrastructure and potentially spreading to other connected systems.

3. Disruption of Business Operations: The ability to manipulate system functionalities may lead to operational disruptions, impacting productivity and service delivery, which can have financial repercussions for the organization.

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CVE-2026-40369

Windows Kernel Vulnerability Lets Attackers Modify Kernel Memory Counters - IT Security News

A critical Windows kernel vulnerability, CVE-2026-40369, allows any unprivileged process, including a browser renderer sandbox, to increment arbitrary kernel memory and reliably escalate to SYSTEM on Windows 11 24H2–25H2. The bug sits in ntoskrnl.exe inside ExpGetProcessInformation, reachable via a ...

6 days ago

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