CVE-2020-2042: PAN-OS: Buffer overflow in the management web interface

Severity: high (CVSS 7.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-09-09 · updated 2026-06-17
Weakness: CWE-121

Description

A buffer overflow vulnerability in the PAN-OS management web interface allows authenticated administrators to disrupt system processes and potentially execute arbitrary code with root privileges. This issue impacts only PAN-OS 10.0 versions earlier than PAN-OS 10.0.1.

Affected products

Palo Alto Networks PAN-OS: from 10.0.0 before 10.0.1 — fixed in 10.0.1
Palo Alto Networks PAN-OS: from 10.0 before 10.0.1 — fixed in 10.0.1

How to fix

Upgrade to a fixed version: Palo Alto Networks PAN-OS 10.0.1; Palo Alto Networks PAN-OS 10.0.1. Check the vendor advisory for mitigations.

References

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