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Qt 6.8.x < 6.8.10 / 6.9.0 < 6.11.3 Multiple Vulnerabilities

🗓️ 30 Oct 2026 00:00:00Reported by TenableType 
nessus
 nessus
🔗 www.tenable.com👁 9 Views

Multiple vulnerabilities in Qt Network and QML modules allow DoS or information disclosure.

Related
Refs
Code
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-105923
21 Oct 202617:11
–circl
circl
Circl
CVE-2026-105946
28 Oct 202609:15
–circl
circl
Circl
CVE-2026-96432
26 Oct 202611:42
–circl
cnnvd
CNNVD
Improper Qt exception handling vulnerability
26 Oct 202600:00
–cnnvd
cnnvd
CNNVD
Qt numeric error vulnerability
20 Oct 202616:00
–cnnvd
cnnvd
CNNVD
Qt buffer error vulnerability
27 Oct 202600:00
–cnnvd
cve
CVE
CVE-2026-105923
21 Oct 202609:21
–cve
cve
CVE
CVE-2026-105946
27 Oct 202606:45
–cve
cve
CVE
CVE-2026-96432
26 Oct 202611:31
–cve
cvelist
Cvelist
CVE-2026-105923 Null-pointer dereference in QTriangulator reachable through VectorImage
21 Oct 202609:21
–cvelist
Rows per page
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(374146);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/11/02");

  script_cve_id("CVE-2026-96432", "CVE-2026-105923", "CVE-2026-105946");
  script_xref(name:"IAVA", value:"2026-A-1217");

  script_name(english:"Qt 6.8.x < 6.8.10 / 6.9.0 < 6.11.3 Multiple Vulnerabilities");

  script_set_attribute(attribute:"synopsis", value:
"The remote host has an application framework installed that is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of Qt installed on the remote host is 6.8.x prior to 6.8.10, or 6.9.0 or later prior to 6.11.3.
It is, therefore, affected by multiple vulnerabilities:

  - A malicious or compromised HTTP/2 server withholding SETTINGS ACK can send RST_STREAM on a completed
    stream, planting a null pointer, and then send a PUSH_PROMISE for that stream, causing a null pointer
    dereference in the QNetworkAccessManager class of the Qt Network module that crashes the application.
    (CVE-2026-96432)

  - A malicious SVG can trigger an integer overflow which in turn triggers a null-pointer dereference in
    VectorImage QML Type. (CVE-2026-105923)

  - Out-of-bounds read in the QAuthenticator NTLM authentication handling in the Qt Network module in Qt
    Group Qt allows remote attackers to obtain sensitive information (heap memory contents) or cause a denial
    of service (application crash) via a crafted NTLM challenge sent by a malicious server or proxy, when an
    application using QNetworkAccessManager or QTcpSocket authenticates with NTLM. (CVE-2026-105946)

Note that Nessus has not tested for these issues but has instead relied only on the application's
self-reported version number.");
  script_set_attribute(attribute:"see_also", value:"https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products");
  script_set_attribute(attribute:"solution", value:
"Upgrade Qt to version 6.8.10, 6.11.3, or later.");
  script_set_attribute(attribute:"agent", value:"unix");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:P");
  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:R/S:U/C:H/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:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_supplemental", value:"CVSS:4.0/AU:N/R:U/RE:L/U:Green");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-105946");
  script_set_attribute(attribute:"cvss4_score_source", value:"CVE-2026-105923");

  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:"2026/10/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/10/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/30");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"asset_categories", value:"component");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:qt:qt");
  script_set_attribute(attribute:"stig_severity", value:"I");
  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("qt_nix_installed.nbin");
  script_require_keys("installed_sw/Qt");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'checks': [
    {
      'product': {'name': 'Qt', 'type': 'app'},
      'check_algorithm': 'default',
      'constraints': [
        {'min_version': '6.8.0', 'fixed_version': '6.8.10'},
        {'min_version': '6.9.0', 'fixed_version': '6.11.3'}
      ]
    }
  ]
};

var res = vdf::check_and_report(vuln_data:vuln_data, severity:SECURITY_WARNING);
vdf::handle_check_and_report_errors(vdf_result:res);

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02 Nov 2026 00:00Current
5.9Medium risk
Vulners AI Score5.9
CVSS 46.7
EPSS0.00455
SSVC
9