VulnerabilitySecurity Week
9.8 — CRITICAL
Palo Alto Networks to Patch Zero-Day Exploited to Hack Firewalls
CVE-2026-0300 affects the Captive Portal service of PAN-OS software on PA and VM series firewalls. The post Palo Alto Networks to Patch Zero-Day Exploited to Hack Firewalls appeared first on SecurityWeek.
🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview
A buffer overflow vulnerability (CVE-2026-0300) in Palo Alto Networks PAN-OS software allows an unauthenticated attacker to execute arbitrary code with root privileges on PA-Series and VM-Series firewalls, posing a critical risk to organizations using these systems.
⚙️Technical Details
💥Impact Assessment
Severity: Critical
Who Is at Risk
Organizations using Palo Alto Networks PA-Series and VM-Series firewalls with PAN-OS software
🛡️Recommended Actions
1Apply the patch for CVE-2026-0300 as soon as possible
2Monitor firewall logs for suspicious activity
3Implement additional security controls to prevent exploitation of this vulnerability
📦Affected Products
Paloaltonetworks Pa-1410Paloaltonetworks Pa-1420Paloaltonetworks Pa-3410Paloaltonetworks Pa-3420Paloaltonetworks Pa-3430Paloaltonetworks Pa-3440Paloaltonetworks Pa-410Paloaltonetworks Pa-410RPaloaltonetworks Pa-410R-5GPaloaltonetworks Pa-415
🔐NVD Verified DataVERIFIED
CVE-2026-0300 ↗CVSS 9.8 — CRITICAL
Attack Vector
NETWORK
Complexity
LOW
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HWeaknesses
CWE-787
Affected Products (CPE)
Paloaltonetworks Pa-1410Paloaltonetworks Pa-1420Paloaltonetworks Pa-3410Paloaltonetworks Pa-3420Paloaltonetworks Pa-3430
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This is a curated summary. The complete article is available at Security Week.