Palo Alto Networks Security Advisories / CVE-2020-2036

CVE-2020-2036 PAN-OS: Reflected Cross-Site Scripting (XSS) vulnerability in management web interface

Severity 8.8 · HIGH
Attack Vector NETWORK
Attack Complexity LOW
Privileges Required NONE
User Interaction REQUIRED
Confidentiality Impact HIGH
Integrity Impact HIGH
Availability Impact HIGH


A reflected cross-site scripting (XSS) vulnerability exists in the PAN-OS management web interface. A remote attacker able to convince an administrator with an active authenticated session on the firewall management interface to click on a crafted link to that management web interface could potentially execute arbitrary JavaScript code in the administrator's browser and perform administrative actions.

This issue impacts:

PAN-OS 8.1 versions earlier than PAN-OS 8.1.16;

PAN-OS 9.0 versions earlier than PAN-OS 9.0.9.

Product Status

PAN-OS 10.0None>= 10.0.0
PAN-OS 9.1None>= 9.1.0
PAN-OS 9.0< 9.0.9>= 9.0.9
PAN-OS 8.1< 8.1.16>= 8.1.16

Severity: HIGH

CVSSv3.1 Base Score: 8.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)

Exploitation Status

Palo Alto Networks is not aware of any malicious attempts to exploit this vulnerability.

Weakness Type

CWE-79 Cross-site Scripting (XSS)


This issue is fixed in PAN-OS 8.1.16, PAN-OS 9.0.9, and all later PAN-OS versions.

Workarounds and Mitigations

Administrators should use caution when they are authenticated to the firewall management web interface and not click or open links from unsolicited sources.

This issue impacts the management web interface of PAN-OS. You can mitigate the impact of this issue by following best practices for securing the PAN-OS management web interface.

Please review the Best Practices for Securing Administrative Access in the PAN-OS technical documentation, available at


Palo Alto Networks thanks Mikhail Klyuchnikov and Nikita Abramov of Positive Technologies and Ben Nott of Palo Alto Networks for discovering and reporting this issue.


Initial publication
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