Is CVE-2020-1992 actively exploited?

No active exploitation of CVE-2020-1992 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-1992 be exploited remotely?

Yes. CVE-2020-1992 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2020-1992?

CVE-2020-1992 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2020-1992

CWE-134Published: April 8, 2020· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2020-1992 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.