Palo Alto Networks PAN-OS 10.1.x / 10.2.x / 11.1.x / 11.2.x / 12.1.x Vulnerability

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(290249);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/02/09");

  script_cve_id("CVE-2026-0227");
  script_xref(name:"IAVA", value:"2026-A-0057");

  script_name(english:"Palo Alto Networks PAN-OS 10.1.x / 10.2.x / 11.1.x / 11.2.x / 12.1.x Vulnerability");

  script_set_attribute(attribute:"synopsis", value:
"The remote PAN-OS host is affected by a vulnerability");
  script_set_attribute(attribute:"description", value:
"The version of Palo Alto Networks PAN-OS running on the remote host is a vulnerable version of 10.1.x, 10.2.x, 11.1.x,
11.2.x, or 12.1.x. It is, therefore, affected by a vulnerability.

    A vulnerability in Palo Alto Networks PAN-OS software enables an unauthenticated attacker to cause a
    denial of service (DoS) to the firewall. Repeated attempts to trigger this issue results in the firewall
    entering into maintenance mode.

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.");
  script_set_attribute(attribute:"see_also", value:"https://security.paloaltonetworks.com/CVE-2026-0227");
  script_set_attribute(attribute:"solution", value:
"Upgrade to a fixed version");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_supplemental", value:"CVSS:4.0/AU:Y/R:U/V:D/RE:M/U:Amber");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:P");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-0227");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(754);

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/01/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/01/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/01/16");

  script_set_attribute(attribute:"potential_vulnerability", value:"true");
  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:paloaltonetworks:pan-os");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Palo Alto Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("palo_alto_version.nbin");
  script_require_keys("Host/Palo_Alto/Firewall/Version", "Host/Palo_Alto/Firewall/Full_Version", "Host/Palo_Alto/Firewall/Source", "Settings/ParanoidReport");

  exit(0);
}

include('vcf.inc');
include('vcf_extras.inc');

vcf::palo_alto::initialize();

var app_name = 'Palo Alto Networks PAN-OS';

var app_info = vcf::get_app_info(app:app_name, kb_ver:'Host/Palo_Alto/Firewall/Full_Version', kb_source:'Host/Palo_Alto/Firewall/Source');

if (report_paranoia < 2) audit(AUDIT_PARANOID);

var constraints = [
  { 'min_version' : '10.1.0', 'fixed_version' : '10.1.14-h20' },
  { 'min_version' : '10.2.7', 'fixed_version' : '10.2.7-h32' },
  { 'min_version' : '10.2.10', 'fixed_version' : '10.2.10-h31' },
  { 'min_version' : '10.2.13', 'fixed_version' : '10.2.13-h18' },
  { 'min_version' : '10.2.16', 'fixed_version' : '10.2.16-h6' },
  { 'min_version' : '10.2.18', 'fixed_version' : '10.2.18-h1' },
  { 'min_version' : '11.1.4', 'fixed_version' : '11.1.4-h27' },
  { 'min_version' : '11.1.6', 'fixed_version' : '11.1.6-h23' },
  { 'min_version' : '11.1.10', 'fixed_version' : '11.1.10-h9', 'fixed_display' : '11.1.10-h9 / 11.1.13' },
  { 'min_version' : '11.2.4', 'fixed_version' : '11.2.4-h15' },
  { 'min_version' : '11.2.7', 'fixed_version' : '11.2.7-h8' },
  { 'min_version' : '11.2.10', 'fixed_version' : '11.2.10-h2' },
  { 'min_version' : '12.1.3', 'fixed_version' : '12.1.3-h3', 'fixed_display' : '12.1.3-h3 / 12.1.4' }
];

vcf::check_version_and_report(
    app_info:app_info,
    constraints:constraints,
    severity:SECURITY_HOLE
);