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    CVE-2026-107590

    An out-of-bounds write vulnerability in the Qt QTextCodec iconv-based encoding of the Qt 5 Compatibility APIs module (Qt Core in Qt 5 and earlier) impacts Qt. Under certain conditions, encoding text with QTextCodec may write outside an internal buffer. This can cause the application to crash and may affect data integrity.

    Published:Oct 27, 2026
    Last Modified:Oct 27, 2026
    EPS:Oct 27, 2026
    EPSS Score:
    CVSS Score:1.9

    Affected Products

    Vendor
    Qt
    Product
    Qt
    Vendor
    Qt
    Product
    Qt5compat
    Vendor
    Qt
    Product
    Qtbase

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-100 Overflow Buffers
    CAPEC-47 Buffer Overflow via Parameter Expansion

    Related CVEs

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    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…
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    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