CVE-2026-0300· palo alto networks / pan-os· CWE-787
Palo Alto Networks PAN-OS Out-of-bounds Write Vulnerability
Exploited in the wild. Listed by CISA on 2026-05-06; known to be used by ransomware.
41.7%likelihood of exploitation, next 30 days
99%of all CVEs are less likely
Nonecheck to confirm it
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.
No ready check is stored for this CVE. Confirm it by hand from the references.
References
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