CVE-2026-94370
CVE-2026-94370 · Memory corruption (double free / use-after-free) vulnerability in core string handling impacts Qt for MCUs
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 6.5 · Medium · EPSS 0.3% · Fix available
- Published
- Updated
Affected products and versions
qt_for_mcus
- Versions
- ≥ 2.12.1, < 2.12.3: Affected (python)
Update to 2.12.3