LSASS Crash Via Netlogon Stack Buffer Overflow - CVE-2026-41089 — Detection Rule
Detects a crash of the LSASS process where netlogon.dll is the faulting module and the exception code is STATUS_STACK_BUFFER_OVERRUN (0xc0000409). This crash, especially on Domain Controllers, might indicate the exploitation of CVE-2026-41089, a denial of service (DoS) vulnerability, which exists in the Netlogon component of Windows and can be triggered by sending specially crafted requests to the Netlogon service, leading to a stack-based buffer overflow and subsequent crash of the LSASS process.