Palo Alto Prisma Access Agent 25.x / 26.x < 26.2.1 Authentication Bypass (CVE-2026-0247)

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

include('compat.inc');

if (description)
{
  script_id(314973);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/05/22");

  script_cve_id("CVE-2026-0247");

  script_name(english:"Palo Alto Prisma Access Agent 25.x / 26.x < 26.2.1 Authentication Bypass (CVE-2026-0247)");

  script_set_attribute(attribute:"synopsis", value:
"A ZTNA/SASE client installed on the remote host is affected by an authentication bypass vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Palo Alto Networks Prisma Access Agent installed on the remote host is 25.x or 26.x prior to 26.2.1.
It is, therefore, affected by an authentication bypass vulnerability:

  - Multiple authorization bypass vulnerabilities in the Endpoint DLP component allow a local attacker to bypass
    authentication controls and execute privileged operations. (CVE-2026-0247)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://security.paloaltonetworks.com/CVE-2026-0247
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?afcb7ec0");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Palo Alto Networks Prisma Access Agent version 26.2.1 or later.");
  script_set_attribute(attribute:"agent", value:"all");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_supplemental", value:"CVSS:4.0/AU:N/R:U/V:C/RE:M/U:Amber");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-0247");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/05/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/05/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/05/15");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:palo_alto_networks:prisma_access_agent");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

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

  script_dependencies("palo_alto_prisma_access_agent_macos_installed.nbin", "palo_alto_prisma_access_agent_win_installed.nbin");
  script_require_keys("installed_sw/Prisma Access Agent");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'checks': [
    {
      'product': {'name': 'Prisma Access Agent', 'type': 'app'},
      'check_algorithm': 'default',
      'constraints': [
        {'min_version': '25.0.0', 'fixed_version': '26.2.1'}
      ]
    }
  ]
};

var result = vdf::check_and_report(vuln_data:vuln_data, severity:SECURITY_HOLE);
vdf::handle_check_and_report_errors(vdf_result:result);