Vulnerability Description
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.
Related Weaknesses (CWE)
References
- https://codereview.qt-project.org/c/qt/qtbase/+/744448
- https://codereview.qt-project.org/c/qt/qtbase/+/745457
- https://codereview.qt-project.org/c/qt/qtbase/+/745464
- https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products#CVE-2026-105946:
FAQ
What is CVE-2026-105946?
CVE-2026-105946 is a documented vulnerability. 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 ...
How severe is CVE-2026-105946?
CVSS scoring is not yet available for CVE-2026-105946. Check NVD for updates.
Is there a patch for CVE-2026-105946?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.