# CVE-2026-0300: A Palo Alto Networks PAN-OS bug is being used in attacks

Status: Being used now (CISA KEV, added 2026-05-06)
Who: 
Do this: 

## Agent prompt (read-only)
Read-only check, change nothing, send nothing anywhere.
Is Palo Alto Networks PAN-OS (CVE-2026-0300) installed or running on this machine or in this project?
1. Find every copy and its version (apps, packages, containers, lockfiles).
2. Compare each version against the vendor's fixed version for CVE-2026-0300. Quote the vendor page you used.
3. Report a table: where, version, fixed version, status (exposed / fixed / not installed / unsure).
4. List the exact update steps, but do not run them.

## Official description
Palo Alto Networks PAN-OS contains an out-of-bounds write vulnerability in the User-ID Authentication Portal (aka Captive Portal) service that can allow an unauthenticated attacker to execute arbitrary code with root privileges on the PA-Series and VM-Series firewalls by sending specially crafted packets.

## Sources
- https://security.paloaltonetworks.com/CVE-2026-0300
- https://nvd.nist.gov/vuln/detail/CVE-2026-0300
- https://nvd.nist.gov/vuln/detail/CVE-2026-0300

Generated by isitexploited.org from public sources. Verify version numbers against the vendor before acting.