CVSS 6.5 (medium) · published 2026-10-14
A defect in the Qt for MCUs core string handling causes heap memory corruption. When an application passes text into Qt Quick Ultralite using the public Qul::String interface type, and that text is held in a std::string, the conversion to the internal string type copies the pointer without taking ownership of it. Two objects then release the same memory, producing a double free, an invalid free, or a use-after-free.
Weakness: CWE-415, CWE-416, CWE-590, CWE-665
Source: NVD CVE-2026-94370
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