Oracle Siebel Server <= 25.2 (January 2026 CPU)

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

include('compat.inc');

if (description)
{
  script_id(294866);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/01/21");

  script_cve_id("CVE-2026-21926");

  script_name(english:"Oracle Siebel Server <= 25.2 (January 2026 CPU)");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is affected by multiple vulnerabilities");
  script_set_attribute(attribute:"description", value:
"The versions of Oracle Siebel CRM installed on the remote host are affected by a vulnerability as referenced in the
January 2026 CPU advisory.

  - Vulnerability in the Siebel CRM Deployment product of Oracle Siebel CRM (component: Server
    Infrastructure). Supported versions that are affected are 17.0-25.2. Easily exploitable vulnerability
    allows unauthenticated attacker with network access via TLS to compromise Siebel CRM Deployment.
    Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently
    repeatable crash (complete DOS) of Siebel CRM Deployment. (CVE-2026-21926)

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://www.oracle.com/docs/tech/security-alerts/cpujan2026csaf.json");
  script_set_attribute(attribute:"see_also", value:"https://www.oracle.com/security-alerts/cpujan2026.html");
  script_set_attribute(attribute:"solution", value:
"Apply the appropriate patch according to the January 2026 Oracle Critical Patch Update advisory.");
  script_set_attribute(attribute:"agent", value:"all");
  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:U/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:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-21926");

  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:"2026/01/20");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/01/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/01/21");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:oracle:siebel_crm");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  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("oracle_siebel_server_installed.nbin");
  script_require_keys("installed_sw/Oracle Siebel Server");

  exit(0);
}

include('vcf.inc');

var app_info = vcf::get_app_info(app:'Oracle Siebel Server');

var constraints = [
  { 'min_version' : '17.0', 'max_version' : '25.2', 'fixed_version' : '25.12' }
];

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