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high advisory

Microsoft Security Updates — July 2026

Roundup of Microsoft security advisories published in July 2026.

PoC PowerShell +511 roundup
11c 354i updated
high advisory

CVE-2026-40369 - Windows Kernel Untrusted Pointer Dereference Privilege Escalation

CVE-2026-40369 is an untrusted pointer dereference vulnerability in the Windows Kernel that allows a locally authorized attacker to escalate privileges.

Windows Kernel privilege-escalation windows-kernel cve
2r 1t 1c
high advisory

CVE-2026-35420 - Windows Kernel Heap-Based Buffer Overflow Local Privilege Escalation

CVE-2026-35420 is a heap-based buffer overflow vulnerability in the Windows Kernel that allows an authorized local attacker to elevate privileges.

Windows Kernel privilege-escalation windows kernel buffer-overflow
2r 1t 1c
high advisory

CVE-2026-33841 Heap-Based Buffer Overflow in Windows Kernel Allows Privilege Escalation

CVE-2026-33841 is a heap-based buffer overflow vulnerability in the Windows Kernel that allows a locally authorized attacker to elevate privileges.

Windows Kernel cve-2026-33841 privilege-escalation windows
2r 1t 1c
high advisory

Untrusted Driver Loaded by Windows Kernel

An untrusted driver loaded by the Windows kernel may indicate an attempt to bypass code signing policies and execute unsigned or self-signed kernel code, potentially leading to defense evasion.

Windows Kernel +1 defense-evasion driver-load kernel
3r 1t 4i