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Palo Alto Networks PAN-OS 9.0.x < 9.0.7 / 9.1.x < 9.1.2 Vulnerability

critical Nessus Plugin ID 344627

Synopsis

The remote PAN-OS host is affected by a vulnerability

Description

The version of Palo Alto Networks PAN-OS running on the remote host is 9.0.x prior to 9.0.7 or 9.1.x prior to 9.1.2. It is, therefore, affected by a vulnerability.

 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.

Tenable has extracted the preceding description block directly from the PAN-OS security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to PAN-OS 9.0.7 / 9.1.2 or later

See Also

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

Plugin Details

Severity: Critical

ID: 344627

File Name: palo_alto_CVE-2020-1992.nasl

Version: 1.1

Type: Combined

Published: 9/10/2026

Updated: 9/10/2026

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.15

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 6.9

Vector: CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2020-1992

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:paloaltonetworks:pan-os

Required KB Items: Host/Palo_Alto/Firewall/Version, Host/Palo_Alto/Firewall/Full_Version, Host/Palo_Alto/Firewall/Source, Settings/ParanoidReport

Exploit Ease: No known exploits are available

Patch Publication Date: 4/8/2020

Vulnerability Publication Date: 4/8/2020

Reference Information

CVE: CVE-2020-1992

CWE: 134