CVE-2020-1992

PAN-OS on PA-7000 Series: Varrcvr daemon network-based denial of service or privilege escalation

CRITICAL
9.8
CVSS Score
Published: April 8, 2020 at 06:41 PM UTC
Updated: June 17, 2026 at 03:02 AM UTC
3 products affected across 1 vendorPAN-OSPa-7080Pa-7050

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Severity
CRITICAL9.8
Exploit prediction
EPSS 3%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

9.0 ≤ v < 9.0.79.0.0 ≤ v < 9.0.79.1 ≤ v < 9.1.29.1.0 ≤ v < 9.1.29.09.1
Vendor states this is fixed in 7.1.* (unaffected)
Vendor states this is fixed in 8.0.* (unaffected)
Vendor states this is fixed in 8.1.* (unaffected)
Affected range stops below 9.0.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.1.2, so it looks safe — our inference, not a vendor statement
paloaltonetworks-pa-7050 (environment) · paloaltonetworks-pa-7080 (environment)
All versions
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-134

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