CVE-2026-41089-LongLogon

LongLogon is a non-destructive precondition checker for the CVE-2026-41089 vulnerability, which is a stack buffer overflow affecting the Windows Netlogon service. It operates without authentication and does not exploit the vulnerability; instead, it sends benign CLDAP pings to determine if a domain controller's DNS domain name is sufficiently long to trigger a crash. This tool provides a reliable mechanism for security assessments by validating the conditions necessary for the vulnerability without the risks associated with executing an exploit.