Netskope Threat Labs

FILE-OTHER Microsoft Windows Type 1 font stack overflow attempt

IPS-CFWIPS-SWG

2 SIDs: 53492, 65531

First seen
January 2023
Last seen
February 2026

Detects a font exploiting CVE-2020-1020, a stack overflow in the Windows Adobe Type 1 font driver that can allow privilege escalation. The rule matches the crafted font metrics that public exploits use to corrupt kernel memory.