Qnap QuTS hero NULL Pointer Dereference (CVE-2025-62850)

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

include('compat.inc');

if (description)
{
  script_id(505898);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/07/31");

  script_cve_id("CVE-2025-62850");

  script_name(english:"Qnap QuTS hero NULL Pointer Dereference (CVE-2025-62850)");

  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: QuTS hero h5.2.9.3410 build
20260214 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:"solution", value:
"Refer to the vendor advisory.");
  # https://www.qnap.com/en/security-advisory/qsa-26-38 (dead - 302 redirect loop to the generic
  # advisory listing page, no Wayback snapshot - fell back to the CVE's own NVD detail page)
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?31d239b1");
  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-2025-62850");
  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: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:quts_hero:h5:u01" :
        {"versionEndExcluding" : "h5.2.9.3410", "versionStartIncluding" : "h5.2.0.2737", "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);