Think you have a false positive on this rule?

Sid 1-50671


OS-WINDOWS Microsoft Windows Win32k null pointer dereference attempt


This event is generated when an attacker attempts to exploit a memory corruption vulnerability in the Windows Kernel.


Attempted Administrator Privilege Gain

Detailed information

This rule fires on attempts to exploit a null dereference vulnerability in Microsoft Windows' win32k.sys driver.

Affected systems

Ease of attack

False positives

Not known

False negatives

Not known

Corrective action


  • Cisco Talos Intelligence Group

Additional References

  • CVE-2019-1132