CVE-2026-94370: CWE-415 Double Free in qt Qt_for_MCUs
Description
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 v4.0
Score 6.5medium
Affected software
qt
Qt_for_MCUs
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Qt
- Date Reserved
- 2026-09-21T11:36:04.324Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6acf17c62cdf04f65649c830
Added to database: 10/14/2026, 05:48:54 UTC
Last updated: 10/14/2026, 05:48:54 UTC
Views: 1
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