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01 Record

CVE-2026-94370

Memory corruption (double free / use-after-free) vulnerability in core string handling impacts Qt for MCUs

MediumPUBLISHEDCNA: Qt
CNA base score6.5 CVSS v4.0CVSS: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
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02 Description

Memory corruption (double free / use-after-free) vulnerability in core string handling impacts Qt for MCUs

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.33% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 26.2% of scored records. A rank, not a probability.
NVD base score
6.5 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:P/AU:N/R:U/V:D/RE:M/U:X
NVD analysis status
Deferred. NVD last modified this record on 2026-10-15.
Red Hat severity
Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-10-14 05:43Z15 DAYS AGO
Last updated
2026-10-14 16:02Z14 DAYS AGO
Reserved
2026-09-21
Assigning CNA
Qt
Record state
PUBLISHED
Severity
Medium (CVSS 6.5)
CNA CVSS vector
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
Weaknesses
  • CWE-415Double FreeVariant
  • CWE-416Use After FreeVariant
  • CWE-590Free of Memory not on the HeapVariant
  • CWE-665Improper InitializationClass
  • CWE-1341Multiple Releases of Same Resource or HandleBase
Data version
5.2
Document digest
13826f74b05dd0320635d2e65c428f3eea3200e425cfc1b9c219b67b126c8c08

05 Affected products

VendorProductVersionsPlatforms
qtQt_for_MCUs2.12.1 to < 2.12.3—

06 References