Palo Alto Networks Security Advisories / CVE-2020-2020

CVE-2020-2020 Cortex XDR Agent: Exceptional condition denial-of-service (DoS)

Severity 5.5 · MEDIUM
Attack Vector LOCAL
Attack Complexity LOW
Confidentiality Impact NONE
Privileges Required LOW
Integrity Impact NONE
User Interaction NONE
Availability Impact HIGH


An improper handling of exceptional conditions vulnerability in Cortex XDR Agent allows a local authenticated Windows user to create files in the software's internal program directory that prevents the Cortex XDR Agent from starting. The exceptional condition is persistent and prevents Cortex XDR Agent from starting when the software or machine is restarted.

This issue impacts:

Cortex XDR Agent 5.0 versions earlier than 5.0.10;

Cortex XDR Agent 6.1 versions earlier than 6.1.7;

Cortex XDR Agent 7.0 versions earlier than 7.0.3;

Cortex XDR Agent 7.1 versions earlier than 7.1.2.

Product Status

Cortex XDR Agent 7.2None>= 7.2.0
Cortex XDR Agent 7.1< 7.1.2>= 7.1.2
Cortex XDR Agent 7.0< 7.0.3>= 7.0.3
Cortex XDR Agent 6.1< 6.1.7>= 6.1.7
Cortex XDR Agent 5.0< 5.0.10>= 5.0.10


CVSSv3.1 Base Score:5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)

Weakness Type

CWE-755 Improper Handling of Exceptional Conditions


This issue is fixed in Cortex XDR Agent 5.0.10, Cortex XDR Agent 6.1.7, Cortex XDR Agent 7.0.3, Cortex XDR Agent 7.1.2, and all later Cortex XDR Agent versions.


Palo Alto Networks thanks Paul van der Haas of Orange Cyberdefense for discovering and reporting this issue.


Initial publication
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