Qnap QTS and QuTS hero NULL Pointer Dereference (CVE-2026-24716)

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

include('compat.inc');

if (description)
{
  script_id(505899);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/07/31");

  script_cve_id("CVE-2026-24716");

  script_name(english:"Qnap QTS and QuTS hero NULL Pointer Dereference (CVE-2026-24716)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"A NULL pointer dereference 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
launch a denial-of-service (DoS) attack. We have already fixed the
vulnerability in the following versions: QTS 5.2.9.3492 build 20260507
and later QuTS hero h5.2.9.3499 build 20260514 and later QuTS hero
h5.3.4.3500 build 20260520 and later QuTS hero h6.0.0.3459 build
20260409 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-26-10");
  script_set_attribute(attribute:"solution", value:
"Refer to the vendor advisory.");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-24716");
  script_cwe_id(476);

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/06/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/06/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/07/31");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:qnap:qts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:qnap:quts_hero:h5");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:qnap:quts_hero:h6");
  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" :
        {"versionEndExcluding" : "5.2.9.3492", "versionStartIncluding" : "5.2.0.2737", "family" : "QTS"},
    "cpe:/o:qnap:quts_hero:h5:u01" :
        {"versionEndExcluding" : "h5.2.9.3499", "versionStartIncluding" : "h5.0.0", "family" : "QuTShero"},
    "cpe:/o:qnap:quts_hero:h5:u02" :
        {"versionEndExcluding" : "h5.3.4.3500", "versionStartIncluding" : "h5.3.0.3115", "family" : "QuTShero"},
    "cpe:/o:qnap:quts_hero:h6" :
        {"versionEndExcluding" : "h6.0.0.3459", "versionStartIncluding" : "h6.0.0.3324", "family" : "QuTShero"}
};

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