Cisco Identity Services Engine (cisco-sa-ise-rce-se7bYU57)

#TRUSTED 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
#TRUST-RSA-SHA256 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
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(348176);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/09/18");

  script_cve_id("CVE-2026-20176");
  script_xref(name:"CISCO-BUG-ID", value:"CSCws25575");
  script_xref(name:"CISCO-BUG-ID", value:"CSCwu26102");
  script_xref(name:"CISCO-BUG-ID", value:"CSCwu59400");
  script_xref(name:"CISCO-SA", value:"cisco-sa-ise-rce-se7bYU57");

  script_name(english:"Cisco Identity Services Engine (cisco-sa-ise-rce-se7bYU57)");

  script_set_attribute(attribute:"synopsis", value:
"The remote device is missing a vendor-supplied security patch.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version, Cisco ISE is affected by a vulnerability.

  - A vulnerability in Cisco ISE could allow an authenticated, remote attacker to execute arbitrary commands
    on the underlying operating system of an affected device. To exploit this vulnerability, the attacker must
    have valid high-privileged administrative credentials. This vulnerability is due to insufficient
    validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted HTTP
    request to an affected device. A successful exploit could allow the attacker to obtain system-level access
    to the underlying operating system and then elevate privileges to root. In single-node deployments,
    successful exploitation of this vulnerability could cause the affected ISE node to become unavailable,
    resulting in a DoS condition. In that condition, endpoints that have not already authenticated would be
    unable to access the network until the node is restored. (CVE-2026-20176)

Please see the included Cisco BIDs and Cisco Security Advisory for more information.");
  # https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-rce-se7bYU57
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?09f0905b");
  script_set_attribute(attribute:"see_also", value:"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCws25575");
  script_set_attribute(attribute:"see_also", value:"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwu26102");
  script_set_attribute(attribute:"see_also", value:"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwu59400");
  script_set_attribute(attribute:"solution", value:
"Upgrade to the relevant fixed version referenced in Cisco bug IDs CSCws25575, CSCwu26102, CSCwu59400");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:M/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:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-20176");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(502, 77);

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/09/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/09/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/09/18");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/h:cisco:identity_services_engine");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:cisco:identity_services_engine");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:cisco:identity_services_engine_software");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"CISCO");

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

  script_dependencies("cisco_ise_detect.nbin");
  script_require_keys("Host/Cisco/ISE/version");

  exit(0);
}

include('ccf.inc');
include('cisco_ise_func.inc');

var product_info = cisco::get_product_info(name:'Cisco Identity Services Engine Software');

product_info = strip_fourth_segment(product_info:product_info);

var vuln_ranges = [
 {'min_ver': '3.2', 'fix_ver': '3.2', 'required_patch': '11'},
 {'min_ver': '3.3', 'fix_ver': '3.3', 'required_patch': '12'},
 {'min_ver': '3.4', 'fix_ver': '3.4', 'required_patch': '7'},
 {'min_ver': '3.5', 'fix_ver': '3.5', 'required_patch': '4'}
];

var required_patch = get_required_patch(vuln_ranges:vuln_ranges, version:product_info['version']);

var reporting = make_array(
  'port'          , 0,
  'severity'      , SECURITY_HOLE,
  'version'       , product_info['version'],
  'bug_id'        , 'CSCws25575, CSCwu26102, CSCwu59400',
  'disable_caveat', TRUE,
  'fix'           , 'See vendor advisory'
);

cisco::check_and_report(
  product_info:product_info,
  reporting:reporting,
  vuln_ranges:vuln_ranges,
  required_patch:required_patch
);