CVE-2020-1996: PAN-OS: Panorama management server log injection

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-05-13 · updated 2026-06-17
Weakness: CWE-862

Description

A missing authorization vulnerability in the management server component of PAN-OS Panorama allows a remote unauthenticated user to inject messages into the management server ms.log file. This vulnerability can be leveraged to obfuscate an ongoing attack or fabricate log entries in the ms.log file 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 9.0.9.

Affected products

Palo Alto Networks PAN-OS: from 7.1.0 through 7.1.26; from 8.0.0 through 8.0.20; from 8.1.0 through 8.1.13; from 9.0.0 through 9.0.8
Palo Alto Networks PAN-OS: from 8.1 before 8.1.14; from 9.0 before 9.0.9; 7.1.*, 8.0.* — fixed in 8.1.14, 9.0.9

How to fix

Upgrade to a fixed version: Palo Alto Networks PAN-OS 8.1.14, 9.0.9. Check the vendor advisory for mitigations.

References

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