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Palo Alto Networks PAN-OS 10.2.x / 11.1.x / 11.2.x / 12.1.x / 12.2.x Multiple Vulnerabilities

critical Nessus Plugin ID 371596

Synopsis

The remote PAN-OS host is affected by multiple vulnerabilities

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, 12.1.x, or 12.2.x. It is, therefore, affected by multiple vulnerabilities.

 Palo Alto Networks is aware of two critical vulnerabilities in PHP: CVE-2026-109618 and CVE-2026-109619.

 CVE-2026-109618 involves a remote code execution vulnerability where handling out-of-memory errors via longjmp() leaves request memory uninitialized due to improper control flow management, allowing attackers to reliably achieve RCE using out-of-memory (OOM) triggers.

 CVE-2026-109619 describes a remote code execution vulnerability where longjmp() fatal error handling leaves global memory pointing to freed memory regions. These regions can later be read or branched on during subsequent requests, enabling attackers to execute arbitrary code.

 Palo Alto Networks has conducted an evaluation of our product portfolio regarding this issue; a summary of the status across products is provided in the table below. We will update the below table when we get more information.

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

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

Solution

Upgrade to a fixed version

See Also

http://www.nessus.org/u?417dfc63

http://www.nessus.org/u?a70a97d7

Plugin Details

Severity: Critical

ID: 371596

File Name: palo_alto_CVE-2026-109618.nasl

Version: 1.1

Type: Combined

Published: 10/23/2026

Updated: 10/23/2026

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 9.4

Percentile: 99.83

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.7

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

CVSS Score Source: CVE-2026-109618

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.4

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

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

CVSS v4

Risk Factor: Critical

Base Score: 9.2

Threat Score: 9.2

Threat Vector: CVSS:4.0/E:A

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

CVSS Score Source: CVE-2026-109619

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: 10/21/2026

Vulnerability Publication Date: 10/21/2026

Reference Information

CVE: CVE-2026-109618, CVE-2026-109619

CWE: 754