CVE-2026-0228

Severity CVSS v4.0:

LOW

Type:

CWE-295 Improper Certificate Validation

Publication date:

11/02/2026

Last modified:

12/02/2026

Description

An improper certificate validation vulnerability in PAN-OS allows users to connect Terminal Server Agents on Windows to PAN-OS using expired certificates even if the PAN-OS configuration would not normally permit them to do so.

Impact

Vector 4.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Amber CVSS v4.0 Severity and Metrics:

Base Score: 1.30 LOW
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Amber

Attack Vector (AV): Network
Attack Complexity (AC): Low
Attack Requirements (AT): None
Privileges Required (PR): Low
User Interaction (UI): None
Confidentiality (VC): None
Integrity (VI): Low
Availability (VA): None
Confidentiality (SC): Low
Integrity (SI): None
Availability (SA): None
Automatable (AU): No
Recovery (R): User
Value Density (V): Diffuse
Vulnerability Response Effort (RE): Moderate
Provider Urgency (U): Amber
Exploit Maturity (E): Unreported

Base Score 4.0

1.30

Severity 4.0

LOW

References to Advisories, Solutions, and Tools

https://security.paloaltonetworks.com/CVE-2026-0228