John is a Senior Security Engineer, Exploit Developer, where he focuses on reverse engineering emerging threats and developing advanced capabilities to protect our customers' attack surfaces. Prior to joining Bishop Fox, John served in a number of selectively manned US Air Force teams, and is a graduate of the NSA's Computer Network Operations Development Program (CNODP).
From John Untz
Blog / Technical Research
Detecting CVE-2026-0265 at Scale: PAN-OS CAS Authentication Bypass
May 22, 2026
Blog / Technical Research
API Authentication Bypass in FortiClient EMS 7.4.5-7.4.6–CVE-2026-35616
Apr 07, 2026
Blog / Technical Research
Pre-Authentication SQL Injection in FortiClient EMS 7.4.4 - CVE-2026-21643
Mar 09, 2026
Blog / Technical Research
Fortinet FortiWeb Authentication Bypass – CVE-2025-64446
Nov 19, 2025
