Palo Alto Networks Security Advisories / CVE-2020-2041

CVE-2020-2041 PAN-OS: Management web interface denial-of-service (DoS)

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 insecure configuration of the appweb daemon of Palo Alto Networks PAN-OS 8.1 allows a remote unauthenticated user to send a specifically crafted request to the device that causes the appweb service to crash. Repeated attempts to send this request result in denial of service to all PAN-OS services by restarting the device and putting it into maintenance mode.

This issue impacts all versions of PAN-OS 8.0, and PAN-OS 8.1 versions earlier than 8.1.16.

Product Status

PAN-OS 10.0None10.0.*
PAN-OS 9.1None9.1.*
PAN-OS 9.0None9.0.*
PAN-OS 8.1< 8.1.16>= 8.1.16
PAN-OS 8.08.0.*

Severity: HIGH

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)

Exploitation Status

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

Weakness Type

CWE-16 Configuration


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

PAN-OS 7.1 and PAN-OS 8.0 are end-of-life and are no longer covered by our Product Security Assurance policies.

Workarounds and Mitigations

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


This issue was found by Nicholas Newsom of Palo Alto Networks during internal security review.


Initial publication
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