CVE-2026-94370CWE-415CWE-416CWE-590CWE-665

CVE-2026-94370

published October 14, 2026

CVSS
6.5
EPSS
0%
Percentile
25.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
6.5 · NONE
CVSS v4.0
6.5 · CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:H/E:U/S:P/AU:N/R:U/V:D/RE:M
EPSS
0.00332 · 25.2th percentile
Weaknesses
CWE-415 · Double Free; CWE-416 · Use After Free; CWE-590 · Free of Memory not on the Heap; CWE-665 · Improper Initialization
Published
2026-10-14T10:17Z
References (1)
https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products#CVE-2026-94370: · a59d8014-47c4-4630-ab43-e1b13cbe58e3
EPSS history
Timeline
  • 15 OCT 03:35Z
    EPSS moved — → 0%
    epss
  • 14 OCT 05:43Z
    Memory corruption (double free / use-after-free) vulnerability in core string handling impacts Qt for MCUs
    cvelistv5
  • 14 OCT 05:43Z
    Memory corruption (double free / use-after-free) vulnerability in core string handling impacts Qt for MCUs
    cvelistv5