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Palo Alto Networks security advisory (AV26-905)

Canada's Cyber Centre relayed Palo Alto Networks advisories covering PAN-OS, Cloud NGFW, Prisma Access, and Prisma Browser vulnerabilities, including PAN-OS CVE-2026-0310 buffer overflow.

The Canadian Centre for Cyber Security issued advisory AV26-905, noting that as of September 10, 2026, multiple Palo Alto Networks products are affected by vulnerabilities. Affected products include Cloud NGFW on AWS and Azure, multiple PAN-OS versions, Prisma Access, and Prisma Browser prior to 151.26.5.170. The advisory references CVE-2026-0310, a PAN-OS buffer overflow via XML processing (PAN-SA-2026-0012), and the September 2026 Chromium monthly vulnerability update. Administrators are encouraged to review the vendor links and apply available updates.

Canadian Centre for Cyber Security · 5d agoAdvisory 3 sourcesCVE-2026-0310

Related CVEs

  • CVE-2026-03107.2—
    Buffer Overflow in PAN-OS XML Processing Enables Root RCE on PA-Series Firewalls
    Palo Alto Networks PAN-OS contains a buffer overflow (CWE-787, out-of-bounds write) in its XML processing functionality. An unauthenticated attacker with network access to the management web interface or the dataplane interface can send malicious XML input to trigger the flaw. On PA-Series hardware firewalls this allows arbitrary code execution with root privileges, while on VM-Series virtual firewalls the impact is limited to a denial-of-service condition. Panorama centralized management is also affected, and exposure is greatly reduced when the management interface is restricted to trusted internal IP addresses per vendor best practice. As of this analysis there is no known public proof-of-concept, no CISA KEV listing, and no confirmed exploitation in the wild (CVSS 4.0 marks exploitability as unproven).
    · Palo Alto Networks PAN-OS on PA-Series firewalls · Palo Alto Networks PAN-OS on VM-Series firewallslarge

Appears with

organization Canadian Centre for Cyber Security 1product Cloud NGFW 1product PAN-OS 1product Prisma Access 1vendor Palo Alto Networks 1
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