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U.S. CISA adds Palo Alto Networks Expedition bugs to its Known Exploited Vulnerabilities catalog
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Palo Alto PAN-OS Buffer Overflow Lets Attackers Execute Arbitrary Code as Root
Palo Alto Networks fixed CVE-2026-0310, a CVSS 9.2 unauthenticated PAN-OS buffer overflow enabling root code execution on PA-Series firewalls.
Palo Alto Networks published an advisory on September 9, 2026 for CVE-2026-0310, a CWE-787 out-of-bounds write in PAN-OS XML processing with a CVSS v4.0 base score of 9.2, affecting the management and dataplane interfaces. Unauthenticated attackers could execute arbitrary code as root on PA-Series hardware firewalls, while VM-Series faces denial-of-service impact and Prisma Access and Cloud NGFW have reduced, authenticated exposure. Affected releases include PAN-OS 10.2, 11.1, 11.2, 12.1, and 12.2 before fixed maintenance releases such as 12.2.3, 12.1.4-h10, 11.2.13-h2, 11.1.16-h2, and 10.2.18-h10; no workaround is available. Palo Alto is not aware of malicious exploitation but classifies remediation urgency as highest.
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Palo Alto Networks Patches Authentication Bypass Exploit in PAN
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