Microsoft · Windows Kernel · CVE-2026-33841
**Name of the Vulnerable Software and Affected Versions**
Microsoft Windows versions prior to Server 2025
**Description**
A heap-based buffer overflow in the Windows Kernel allows an authorized local attacker to elevate their privileges. A buffer overflow occurs when a program writes more data to a memory block (the buffer) than it is allocated to hold, potentially overwriting adjacent memory.
**Recommendations**
Update to a version released after the May 2026 patch cycle.