Palo Alto Networks Security Advisories / CVE-2020-2011

CVE-2020-2011 PAN-OS: Panorama registration denial of service

Severity 7.5 · HIGH
Attack Vector NETWORK
Attack Complexity LOW
Confidentiality Impact NONE
Privileges Required NONE
Integrity Impact NONE
User Interaction NONE
Availability Impact HIGH


An improper input validation vulnerability in the configuration daemon of Palo Alto Networks PAN-OS Panorama allows for a remote unauthenticated user to send a specifically crafted registration request to the device that causes the configuration service to crash. Repeated attempts to send this request result in denial of service to all PAN-OS Panorama services by restarting the device and putting it into maintenance mode.

This issue affects:

All versions of PAN-OS 7.1 and 8.0;

PAN-OS 8.1 versions earlier than 8.1.14;

PAN-OS 9.0 versions earlier than 9.0.7;

Product Status

PAN-OS 9.1None>= 9.1.0
PAN-OS 9.0< 9.0.7>= 9.0.7
PAN-OS 8.1< 8.1.14>= 8.1.14
PAN-OS 8.08.0.*
PAN-OS 7.17.1.*


CVSSv3.1 Base Score:7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Weakness Type

CWE-20 Improper Input Validation


This issue is fixed in PAN-OS 8.1.14, PAN-OS 9.0.7, PAN-OS 9.1.0 and all later PAN-OS versions.

PAN-OS 8.0 is now end-of-life as of October 31, 2019, and is no longer covered by our Product Security Assurance policies.

PAN-OS 7.1 is on extended support until June 30, 2020, and is only being considered for critical security vulnerability fixes.

Workarounds and Mitigations

This issues affects the management interface of PAN-OS and is strongly mitigated by following best practices for securing the PAN-OS management interface. Please review the Best Practices for Securing Administrative Access in the PAN-OS technical documentation, available at:


This issue was found by Ben Nott of Palo Alto Networks during internal security review.


Removed 9.1.0 from affected releases
Initial publication
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