Palo Alto PAN-OS Flaw Under Active Exploitation Enables Remote Code Execution
ATT&CK techniques detected
T1190Exploit Public-Facing Application
81%
“palo alto pan - os flaw under active exploitation enables remote code execution palo alto networks has released an advisory warning that a critical buffer overflow vulnerability in its pan - os software has been exploited in the wild. the vulnerability, tracked as cve - 2026 - 03…”
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T1190Exploit Public-Facing Application
34%
“2026. the company also said the vulnerability is applicable only to pa - series and vm - series firewalls that are configured to use the user - id authentication portal. " customers following standard security best practices, such as restricting sensitive portals to trusted inter…”
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Summary
Palo Alto Networks has released an advisory warning that a critical buffer overflow vulnerability in its PAN-OS software has been exploited in the wild. The vulnerability, tracked as CVE-2026-0300, has been described as a case of unauthenticated remote code execution. It carries a CVSS score of 9.3 if the User-ID Authentication Portal is configured to enable access from the internet or any