Cisco Identity Services Engine Multiple Vulnerabilities (cisco-sa-ise-rce-traversal-8bYndVrZ)

#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(306557);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/04/20");

  script_cve_id("CVE-2026-20147", "CVE-2026-20148");
  script_xref(name:"CISCO-BUG-ID", value:"CSCws52717");
  script_xref(name:"CISCO-BUG-ID", value:"CSCws52738");
  script_xref(name:"CISCO-SA", value:"cisco-sa-ise-rce-traversal-8bYndVrZ");
  script_xref(name:"IAVA", value:"2026-A-0357");

  script_name(english:"Cisco Identity Services Engine Multiple Vulnerabilities (cisco-sa-ise-rce-traversal-8bYndVrZ)");

  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 multiple vulnerabilities.

  - A vulnerability in Cisco ISE and Cisco ISE-PIC 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 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 user-
    level access to the underlying operating system and then elevate privileges to root. In single-node ISE
    deployments, successful exploitation of this vulnerability could cause the affected ISE node to become
    unavailable, resulting in a denial of service (DoS) condition. In that condition, endpoints that have not
    already authenticated would be unable to access the network until the node is restored. (CVE-2026-20147)

  - A vulnerability in Cisco ISE and Cisco ISE-PIC could allow an authenticated, remote attacker to perform
    path traversal attacks on the underlying operating system and read arbitrary files. To exploit this
    vulnerability, the attacker must have valid administrative credentials. This vulnerability is due to
    improper validation of user-supplied input. An attacker could exploit this vulnerability by sending a
    crafted HTTP request to an affected system. A successful exploit could allow the attacker to access
    sensitive files on the affected system. (CVE-2026-20148)

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-traversal-8bYndVrZ
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5559402d");
  script_set_attribute(attribute:"see_also", value:"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCws52717");
  script_set_attribute(attribute:"see_also", value:"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCws52738");
  script_set_attribute(attribute:"solution", value:
"Upgrade to the relevant fixed version referenced in Cisco bug IDs CSCws52717, CSCws52738");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/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:L/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-2026-20147");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(22, 77);

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/04/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/04/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/04/15");

  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_set_attribute(attribute:"stig_severity", value:"II");
  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': '1.0', 'fix_ver': '3.1', 'required_patch': '11'},
 {'min_ver': '3.2', 'fix_ver': '3.2', 'required_patch': '10'},
 {'min_ver': '3.3', 'fix_ver': '3.3', 'required_patch': '11'},
 {'min_ver': '3.4', 'fix_ver': '3.4', 'required_patch': '6'},
 {'min_ver': '3.5', 'fix_ver': '3.5', 'required_patch': '3'}
];

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'        , 'CSCws52717, CSCws52738',
  '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
);