CVE-2020-1992

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

A format string vulnerability in the Varrcvr daemon of PAN-OS on PA-7000 Series devices with a Log Forwarding Card (LFC) allows remote attackers to crash the daemon creating a denial of service condition or potentially execute code with root privileges. This issue affects Palo Alto Networks PAN-OS 9.0 versions before 9.0.7; PAN-OS 9.1 versions before 9.1.2 on PA-7000 Series devices with an LFC installed and configured. This issue requires WildFire services to be configured and enabled. This issue does not affect PAN-OS 8.1 and earlier releases. This issue does not affect any other PA Series firewalls.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-134

Affected software

Vendor	Product	Versions
Palo Alto Networks	PAN-OS	>= 9.0, < 9.0.7; >= 9.1, < 9.1.2
Palo Alto Networks	PAN-OS	—

References

https://security.paloaltonetworks.com/CVE-2020-1992Vendor Advisory
https://security.paloaltonetworks.com/CVE-2020-1992Vendor Advisory

Timeline

Published: Apr 8, 2020
Last modified: Jun 17, 2026
NVD status: Modified

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