Qnap QTS and QuTS Use of Uninitialized Variable (CVE-2025-58466)

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

include('compat.inc');

if (description)
{
  script_id(505219);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/03/10");

  script_cve_id("CVE-2025-58466");

  script_name(english:"Qnap QTS and QuTS Use of Uninitialized Variable (CVE-2025-58466)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"A use of uninitialized variable vulnerability has been reported to
affect several QNAP operating system versions. If a remote attacker
gains an administrator account, they can then exploit the
vulnerability to denial of service conditions, or modify control flow
in unexpected ways. We have already fixed the vulnerability in the
following versions: QTS 5.2.8.3332 build 20251128 and later QuTS hero
h5.2.8.3321 build 20251117 and later

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.");
  script_set_attribute(attribute:"see_also", value:"https://www.qnap.com/en/security-advisory/qsa-26-05");
  script_set_attribute(attribute:"solution", value:
"Refer to the vendor advisory.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:M/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:H/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:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-58466");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(457);

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/02/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/02/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/03/09");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:qnap:qts:5.2.8.3350");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:qnap:quts_hero:h5.2.8.3350");
  script_set_attribute(attribute:"generated_plugin", value:"former");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Tenable.ot");

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

  script_dependencies("tenable_ot_api_integration.nasl");
  script_require_keys("Tenable.ot/Qnap");

  exit(0);
}


include('tenable_ot_cve_funcs.inc');

get_kb_item_or_exit('Tenable.ot/Qnap');

var asset = tenable_ot::assets::get(vendor:'Qnap');

var vuln_cpes = {
    "cpe:/o:qnap:qts:5.2.8.3350" :
        {"versionEndExcluding" : "5.2.8.3350", "versionStartIncluding" : "5.2.0", "family" : "QTS"},
    "cpe:/o:qnap:quts_hero:h5.2.8.3350" :
        {"versionEndExcluding" : "h5.2.8.3350", "versionStartIncluding" : "h5.2.0", "family" : "QuTShero"}
};

tenable_ot::cve::compare_and_report(asset:asset, cpes:vuln_cpes, severity:SECURITY_WARNING);