Vulnerable component: Windows
CVSSv3 score: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C
CWE-ID: CWE-20 - Improper Input Validation
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to the way Windows Error Reporting (WER) handles files. A local user can create a specially crafted WER file and execute arbitrary code on the system in kernel mode.
Note: this vulnerability is being actively exploited in the wild.