Pan Os

A buffer overflow vulnerability in the User-ID™ Authentication Portal (aka Captive Portal) service of Palo Alto Networks PAN-OS software allows an unauthenticated attacker to execute arbitrary code with root privileges on the PA-Series and VM-Series firewalls by sending specially crafted packets. The risk of this issue is greatly reduced if you secure access to the User-ID™ Authentication Portal per the best practice guidelines https://knowledgebase.paloaltonetworks.com/KCSArticleDetail by restricting access to only trusted internal IP addresses. Prisma Access, Cloud NGFW and Panorama appliances are not impacted by this vulnerability.

Published: 2026-05-06T18:57:39.876Z
Updated: 2026-05-12T12:08:45.523Z

An authentication bypass vulnerability in Palo Alto Networks PAN-OS® software enables an unauthenticated attacker with network access to bypass authentication controls when Cloud Authentication Service (CAS) is enabled. The risk is higher if CAS is enabled on the management interface and lower when any other login interfaces are used. The risk of this issue is greatly reduced if you secure access to the management web interface by restricting access to only trusted internal IP addresses according to our recommended best practice deployment guidelines https://live.paloaltonetworks.com/t5/community-blogs/tips-amp-tricks-how-to-secure-the-management-access-of-your-palo/ba-p/464431 . This issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series). Cloud NGFW and Prisma Access® are not impacted by this vulnerability.

Published: 2026-05-13T17:38:33.822Z
Updated: 2026-05-14T10:31:44.019Z

A buffer overflow vulnerability in the DNS proxy and DNS Server features of Palo Alto Networks PAN-OS® Software allows an unauthenticated attacker with network access to cause a denial of service (DoS) condition (all PAN-OS platforms except Cloud NGFW and Prisma Access) or potentially execute arbitrary code by sending specially crafted network traffic (PA-Series hardware only). Panorama, Cloud NGFW, and Prisma® Access are not impacted by this vulnerability.

Published: 2026-05-13T17:40:36.602Z
Updated: 2026-05-14T03:56:31.192Z

Multiple denial of service vulnerabilities in Palo Alto Networks PAN-OS® software allow an unauthenticated attacker with network access to cause a denial of service (DoS) condition by sending specially crafted network traffic. Panorama and Cloud NGFW are not impacted by these vulnerabilities.

Published: 2026-05-13T17:49:43.620Z
Updated: 2026-05-13T18:49:05.116Z

Multiple command injection vulnerabilities in Palo Alto Networks PAN-OS® software enable an authenticated administrator to bypass system restrictions and run arbitrary commands as a root user. To be able to exploit this issue, the user must have access to the PAN-OS CLI or Web UI. The security risk posed by this issue is significantly minimized when CLI access is restricted to a limited group of administrators and by restricting access to the management web interface to only trusted internal IP addresses according to our recommended best practice deployment guidelines https://live.paloaltonetworks.com/t5/community-blogs/tips-amp-tricks-how-to-secure-the-management-access-of-your-palo/ba-p/464431 . This issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series). Cloud NGFW and Prisma Access® are not impacted by these vulnerabilities.

Published: 2026-05-13T17:59:31.408Z
Updated: 2026-05-14T03:56:33.433Z

A server-side request forgery (SSRF) vulnerability in the IKEv2 implementation of Palo Alto Networks PAN-OS® software allows an unauthenticated attacker to cause the firewall to send network requests to unintended destinations or cause a denial of service (DoS) condition. Panorama, Cloud NGFW and Prisma® Access are not impacted by these vulnerabilities.

Published: 2026-05-13T18:08:36.338Z
Updated: 2026-05-13T18:58:00.878Z

Authentication bypass vulnerabilities in the GlobalProtect portal and gateway of Palo Alto Networks PAN-OS® software allows the attacker to bypass security restrictions and establish an unauthorized VPN connection. Panorama and Cloud NGFW are not impacted by these issues.

Published: 2026-05-13T18:15:10.172Z
Updated: 2026-05-30T03:55:17.629Z

A stored cross-site scripting (XSS) vulnerability in Palo Alto Networks PAN-OS® software enables a malicious authenticated administrator to store a JavaScript payload using the web interface. This issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series). Cloud NGFW and Prisma® Access are not impacted by this vulnerability.

Published: 2026-05-13T18:18:05.739Z
Updated: 2026-05-13T18:59:38.507Z

An improper certificate validation vulnerability in PAN-OS allows users to connect Terminal Server Agents on Windows to PAN-OS using expired certificates even if the PAN-OS configuration would not normally permit them to do so.

Published: 2026-02-11T17:55:44.109Z
Updated: 2026-02-11T19:04:15.415Z

A vulnerability in Palo Alto Networks PAN-OS software enables an unauthenticated attacker to cause a denial of service (DoS) to the firewall. Repeated attempts to trigger this issue results in the firewall entering into maintenance mode.

Published: 2026-01-15T18:45:08.579Z
Updated: 2026-01-30T23:36:56.887Z

An information disclosure vulnerability in Palo Alto Networks PAN-OS® software enables an authenticated administrator to view session tokens of users authenticated to the firewall web UI. This may allow impersonation of users whose session tokens are leaked.   The security risk posed by this issue is significantly minimized when CLI access is restricted to a limited group of administrators. Cloud NGFW and Prisma® Access are not affected by this vulnerability.

Published: 2025-10-09T18:13:22.016Z
Updated: 2025-10-09T19:15:06.182Z

An information disclosure vulnerability in the SD-WAN feature of Palo Alto Networks PAN-OS® software enables an unauthorized user to view unencrypted data sent from the firewall through the SD-WAN interface. This requires the user to be able to intercept packets sent from the firewall. Cloud NGFW and Prisma® Access are not affected by this vulnerability.

Published: 2025-06-13T05:42:38.482Z
Updated: 2025-06-13T19:04:49.865Z

A reflected cross-site scripting (XSS) vulnerability in the GlobalProtect™ gateway and portal features of Palo Alto Networks PAN-OS® software enables execution of malicious JavaScript in the context of an authenticated Captive Portal user's browser when they click on a specially crafted link. The primary risk is phishing attacks that can lead to credential theft—particularly if you enabled Clientless VPN. There is no availability impact to GlobalProtect features or GlobalProtect users. Attackers cannot use this vulnerability to tamper with or modify contents or configurations of the GlobalProtect portal or gateways. The integrity impact of this vulnerability is limited to enabling an attacker to create phishing and credential-stealing links that appear to be hosted on the GlobalProtect portal. For GlobalProtect users with Clientless VPN enabled, there is a limited impact on confidentiality due to inherent risks of Clientless VPN that facilitate credential theft. You can read more about this risk in the informational bulletin PAN-SA-2025-0005 https://security.paloaltonetworks.com/PAN-SA-2025-0005 https://security.paloaltonetworks.com/PAN-SA-2025-0005 . There is no impact to confidentiality for GlobalProtect users if you did not enable (or you disable) Clientless VPN.

Published: 2025-05-14T18:07:36.381Z
Updated: 2026-04-02T23:38:11.074Z