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CVE-2026-71265— Domoticz MochadTCP Stack Buffer Overflow via MOCHAD_RFSEC strcpy()

Quick assessment

Affected
domoticz domoticz
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Domoticz是Domoticz团队开源的一款智能家居自动化系统。 Domoticz存在缓冲区错误漏洞，该漏洞源于hardware/MochadTCP.cpp中MochadTCP::MatchLine()处理MOCHAD_RFSEC消息时，使用strcpy()将最多1028字节的网络接收数据复制到固定50字节的栈缓冲区tempRFSECbuf，且无长度检查，导致栈缓冲区溢出，攻击者可利用该漏洞破坏Domoticz工作线程的栈。

CVSS 7.5 · High EPSS 0.29% · P19

Affected Version Matrix 1

VendorProduct Version RangeStatus
domoticz domoticz ≤ * affected
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I. Basic Information for CVE-2026-71265

Vulnerability Information
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Vulnerability Title
Domoticz MochadTCP Stack Buffer Overflow via MOCHAD_RFSEC strcpy()
Source: CVE Program / CVE List V5
Vulnerability Description
Domoticz's MochadTCP::MatchLine handler for MOCHAD_RFSEC messages (hardware/MochadTCP.cpp) copies network-received data from the up-to-1028-byte m_mochadbuffer into a fixed 50-byte stack buffer tempRFSECbuf using strcpy with no length check, across three separate code branches (DS10A/KR10A/MS10A device types).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
Domoticz 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Domoticz是Domoticz团队开源的一款智能家居自动化系统。 Domoticz存在缓冲区错误漏洞，该漏洞源于hardware/MochadTCP.cpp中MochadTCP::MatchLine()处理MOCHAD_RFSEC消息时，使用strcpy()将最多1028字节的网络接收数据复制到固定50字节的栈缓冲区tempRFSECbuf，且无长度检查，导致栈缓冲区溢出，攻击者可利用该漏洞破坏Domoticz工作线程的栈。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
domoticz domoticz 0 ~ * -

II. Public POCs for CVE-2026-71265

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Qwen3.6-35B-A3B · 7571 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
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Full executable POC code
Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-71265

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Patches & Fixes for CVE-2026-71265 (1)

IV. Related Vulnerabilities

Same product: domoticz
Same vendor: domoticz
Same weakness: CWE-121

V. Comments for CVE-2026-71265

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