CVE-2026-94370 — Memory corruption (double free / use-after-free) vulnerability in core string handling impacts Qt for MCUs
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 ty…
Published: 2026-10-14 · CVSS: 6.5 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7