CVE-2022-0023

CVE.org · Published

Record status: Published
Identifier year (not publication year): 2022
Source publication: Apr 13, 2022
Source updated: Sep 16, 2024
Imported by cveboard: Oct 24, 2026
Source snapshot: cve_2026-10-24_midnight_baseline · Oct 24, 2026

CNA source text (English)

PAN-OS: Denial-of-Service (DoS) Vulnerability in DNS Proxy

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.

Scoped product and version facts

Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.

Exploitation unknown; this catalogue does not assess exploitation.

PAN-OS

Vendor: Palo Alto Networks
Product: PAN-OS
Platforms: Unknown
Default status: Unknown

PAN-OS · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
10.2.*	`unaffected`	Unavailable	Unavailable	Unavailable	None listed
8.1	`affected`	custom	8.1.22	Unavailable	`8.1.22` → `unaffected`
9.1	`affected`	custom	9.1.13	Unavailable	`9.1.13` → `unaffected`
10.1	`affected`	custom	10.1.5	Unavailable	`10.1.5` → `unaffected`
10.0	`affected`	custom	10.0.10	Unavailable	`10.0.10` → `unaffected`
9.0	`affected`	custom	9.0.16	Unavailable	`9.0.16` → `unaffected`

Prisma Access

Vendor: Palo Alto Networks
Product: Prisma Access
Platforms: Unknown
Default status: Unknown

Prisma Access · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
3.0 Preferred, Innovation	`unaffected`	Unavailable	Unavailable	Unavailable	None listed
2.2 Preferred	`unaffected`	Unavailable	Unavailable	Unavailable	None listed
2.1 Preferred, Innovation	`unaffected`	Unavailable	Unavailable	Unavailable	None listed