CVE-2026-103653

MediumCVSS 6.7/10Last modified Nov 3, 2026

Description

An out-of-bounds read vulnerability in the Qt CoAP message parsing (QCoapInternalReply::createFromFrame()) of the Qt CoAP module. Processing a malformed CoAP message can cause an application using Qt CoAP to crash (loss of availability) or to continue operating on incorrect data (potential loss of integrity).

Metrics

CVSS 4.0 6.7/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/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:X/AU:Y/R:U/V:X/RE:L/U:Amber

Weakness enumeration

CWE-125

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

Vendor	Product	Versions
qt	Qt	>= 5.13.0, <= 6.8.8; >= 6.9.0, <= 6.11.2

References

Timeline

Published: Nov 3, 2026
Last modified: Nov 3, 2026
NVD status: Awaiting Analysis

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