Domoticz MochadTCP Stack Buffer Overflow via MOCHAD_RFSEC strcpy()
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.
Summary
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).
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2026-71265
- 2026-10-03 Alias added: GHSA-fgwp-vhm9-7g5q
References
More Domoticz vulnerabilities
- TI-2019-07959 Domoticz before 4.10578 allows SQL Injection via the idx parameter in CWebServer::GetFloorplanImage in WebServer.cpp. CVSS 3.0CRITICAL 9.8
- TI-2019-07971 Domoticz before 4.10579 neglects to categorize \n and \r as insecure argument options. CVSS 3.0HIGH 7.5
- TI-2020-14215 Emmanuel MyDomoAtHome (MDAH) REST API REST API Domoticz ISS Gateway 0.2.40 is affected by… CVSS 3.1HIGH 7.5
- TI-2019-11584 Domoticz 4.10717 has XSS via item.Name. CVSS 3.0MEDIUM 5.4
- TI-2026-82248 Missing authorization and path traversal in Domoticz udevices command CVSS 3.1MEDIUM 5.4
- TI-2026-00755 Domoticz < 2026.1 Stored XSS via Hardware Configuration Endpoint CVSS 4.0MEDIUM 4.8
Sources
- CVE-2026-71265 · CVE Program
- CVE-2026-71265 · NVD
- FIRST EPSS
- GHSA-fgwp-vhm9-7g5q · GitHub Advisory Database · CC BY 4.0
- CVE-2026-71265 · Red Hat security data · CC BY 4.0
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