CVE-2026-94370
Memory corruption (double free / use-after-free) vulnerability in core string handling impacts Qt for MCUs
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-415 CWE-416 CWE-590 CWE-665 |
| Vendor | qt |
| Product | qt_for_mcus |
| Published | Oct 14, 2026 |
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Affected Versions
qt / Qt_for_MCUs
2.12.1 < 2.12.3