CVE-2026-0300

Palo Alto Networks PAN-OS Out-of-bounds Write Vulnerability

Pan-Os

A buffer overflow vulnerability in the User-ID™ Authentication Portal (aka Captive Portal) service of Palo Alto Networks PAN-OS software allows an unauthenticated attacker to execute arbitrary code with root privileges on the PA-Series and VM-Series firewalls by sending specially crafted packets. The risk of this issue is greatly reduced if you secure access to the User-ID™ Authentication Portal per the best practice guidelines…

6. Mai 2026

Ausgewertete Quellen

• Hersteller
  https://security.paloaltonetworks.com/CVE-2026-0300
• Hinweis
  https://cert-portal.siemens.com/productcert/html/ssa-967325.html
• CISA
  https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-0300
• CISA
  Palo Alto Networks PAN-OS Out-of-bounds Write Vulnerability
• NVD
  CVE-2026-0300