CVE-2026-9499

An out-of-bounds read buffer over-read vulnerability exists in QTextCodec::codecForName in Qt. When the function is called with a QByteArray that is not NUL-terminated for example, one created with QByteArray::fromRawData, the codec-name matching routine reads past the end of the supplied buffer...

CVE-2026-9499

CVE-2026-9499 describes an out-of-bounds read in QTextCodec::codecForName() within Qt’s code paths. If a non-NUL-terminated QByteArray (e.g., fromRawData()) is used, the codec-name matching may read past the buffer end. In most cases this yields an incorrect text codec; in the worst case, over-re...