CVE Feed

    Dashboard / CVE / CVE-2026-105946

    CVE-2026-105946

    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.

    Published:Oct 27, 2026
    Last Modified:Oct 27, 2026
    EPS:Oct 27, 2026
    EPSS Score:
    CVSS Score:5.3

    Affected Products

    Vendor
    Qt
    Product
    Qt
    Vendor
    Qt
    Product
    Qtbase

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-125 Out-of-bounds Read

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-540 Overread Buffers

    Related CVEs

    CVE-2026-107590 (CVSS 1.9) — An out-of-bounds write vulnerability in the Qt QTextCodec iconv-based encoding of the Qt 5 Compatibility APIs …
    CVE-2026-107472 (CVSS 4.3) — An out-of-bounds read vulnerability in the QTextCodec TSCII encoding of the Qt 5 Compatibility APIs module (Qt…
    CVE-2026-107157 (CVSS 2) — Specially crafted CBOR input passed to QCborValue::fromCbor() in Qt Core can cause an out-of-bounds read, whic…
    CVE-2026-96432 (CVSS 2.1) — A malicious or compromised HTTP/2 server withholding SETTINGS ACK can send RST_STREAM on a completed stream, p…
    CVE-2026-95620 (CVSS 2.1) — A use-after-free vulnerability in the Qt QNetworkAccessManager HTTP/2 client support of the Qt Network module …
    CVE-2026-16762 (CVSS 8.7) — An attacker able to supply a crafted XML document to an application using QXmlStreamReader can cause dispropor…
    CVE-2026-105923 (CVSS 4) — A malicious SVG can trigger an integer overflow which in turn triggers a null-pointer dereference in VectorIma…
    CVE-2026-101201 (CVSS 4.3) — A malformed header in the binary file fed to QBinaryJson::fromBinaryData() can cause undefined behaviour becau…
    CVE-2026-8168 (CVSS 7.1) — Uncontrolled recursion in the SVG parser and renderer of the Qt SVG module (QtSvg) in Qt Group Qt allows attac…
    CVE-2026-79680 (CVSS 4.5) — Authentication bypass vulnerability in the password authentication mechanism of the Qt VNC Server module. An a…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High