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(348170);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/09/18");

  script_cve_id("CVE-2026-20307");
  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 the web-based management interface of 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 at least low-privileged administrative credentials.
    This vulnerability is due to insecure deserialization of a user-supplied Java byte stream. An attacker
    could exploit this vulnerability by sending a crafted serialized Java object to the web-based management
    interface of an affected device. A successful exploit could allow the attacker to execute arbitrary code
    on the device and 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 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-2026-20307)

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: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-2026-20307");

  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': '1.0', 'fix_ver': '3.1', 'required_patch': '12'},
 {'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': '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'        , '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
);