Palo Alto PAN-OS zero-day - unauthenticated root shell on your firewall
What happens
PAN-OS GlobalProtect has a command injection flaw (CVSS 10.0) exploitable without credentials. Exploited as a zero-day by APT group UTA0218 before disclosure in April 2024. Attacker gets root shell on the firewall, extracts running config and internal credentials, pivots into your core network from the device that's supposed to protect it.
Why your scanner misses the chain
Your scanner detects the exposed GlobalProtect service. Your DAST doesn't scan firewall management interfaces. No tool connects: "this firewall credential dump + these discovered internal services = direct pivot into core infrastructure." The finding sits in a queue while the attacker already has your network config.
How Pentesterra catches it
KB covers PAN-OS CVE-2024-3400 from disclosure. Potential vulnerability is calculated even when the management interface is partially obscured. Attack chain engine correlates the firewall exposure with discovered internal services - mapping blast radius before the patch window closes.