CVE-2026-103653— Out-of-bounds read vulnerability in CoAP message parsing impacts Qt CoAP
Quick assessment
Affected
qt Qt
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Qt CoAP 模块在解析 CoAP 消息时（具体位于 函数）存在越界读取漏洞。处理畸形的 CoAP 消息可能导致使用 Qt CoAP 的应用程序崩溃（造成可用性丧失），或使其基于错误数据继续运行（可能导致完整性受损）。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-103653
Vulnerability Information
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Vulnerability Title
Out-of-bounds read vulnerability in CoAP message parsing impacts Qt CoAP
Source: CVE Program / CVE List V5
Vulnerability 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).
Source: CVE Program / CVE List V5
CVSS Information
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/AU:Y/R:U/RE:L/U:Amber
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-103653
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2026-103653 (3)
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