Detections
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Palo Alto Networks PAN-OS 10.2.x / 11.1.x / 11.2.x / 12.1.x Vulnerability

high Nessus Plugin ID 314450

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Synopsis

The remote PAN-OS host is affected by a vulnerability

Description

The version of Palo Alto Networks PAN-OS running on the remote host is a vulnerable version of 10.2.x, 11.1.x, 11.2.x, or 12.1.x. It is, therefore, affected by a vulnerability.

 Authentication bypass vulnerabilities in the GlobalProtect portal and gateway of Palo Alto Networks PAN- OS software allows the attacker to bypass security restrictions and establish an unauthorized VPN connection.

 Panorama and Cloud NGFW are not impacted by these issues.

Tenable has extracted the preceding description block directly from the PAN-OS security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to a fixed version

See Also

https://security.paloaltonetworks.com/CVE-2026-0257

Plugin Details

Severity: High

ID: 314450

File Name: palo_alto_CVE-2026-0257.nasl

Version: 1.3

Type: Combined

Published: 5/13/2026

Updated: 5/30/2026

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: High

Score: 8.3

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N

CVSS Score Source: CVE-2026-0257

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 8.4

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

CVSS v4

Risk Factor: High

Base Score: 7.8

Threat Score: 7.8

Threat Vector: CVSS:4.0/E:A

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:N

Vulnerability Information

CPE: cpe:/o:paloaltonetworks:pan-os

Required KB Items: Settings/ParanoidReport, Host/Palo_Alto/Firewall/Version, Host/Palo_Alto/Firewall/Full_Version, Host/Palo_Alto/Firewall/Source

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/13/2026

Vulnerability Publication Date: 5/13/2026

CISA Known Exploited Vulnerability Due Dates: 6/1/2026

Reference Information

CVE: CVE-2026-0257

CWE: 565

IAVA: 2026-A-0453