AUGUST 4, 2026
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Case File

CVE-2022-0023

MEDIUM · CVSS 5.9 EPSS 0.70%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2022-04-13 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.9. It affects Palo Alto, PAN-OS. It may lead to a denial-of-service condition.

CVE
CVE-2022-0023
Severity
MEDIUM
CVSS
5.9
EPSS
0.70%
Palo Alto PAN-OS

Original NVD Description

An improper handling of exceptional conditions vulnerability exists in the DNS proxy feature of Palo Alto Networks PAN-OS software that enables a meddler-in-the-middle (MITM) to send specifically crafted traffic to the firewall that causes the service to restart unexpectedly. Repeated attempts to send this request result in denial-of-service to all PAN-OS services by restarting the device in maintenance mode. This issue does not impact Panorama appliances and Prisma Access customers. This issue impacts: PAN-OS 8.1 versions earlier than PAN-OS 8.1.22; PAN-OS 9.0 versions earlier than PAN-OS 9.0.16; PAN-OS 9.1 versions earlier than PAN-OS 9.1.13; PAN-OS 10.0 versions earlier than PAN-OS 10.0.10; PAN-OS 10.1 versions earlier than PAN-OS 10.1.5. This issue does not impact PAN-OS 10.2.

Related CVEs

Other vulnerabilities affecting the same vendor(s)