Domoticz MochadTCP Stack Buffer Overflow via MOCHAD_RFSEC strcpy() (CVE-2026-71265) | HOL Guard CVE

High · CVSS 7.5CVE-2026-71265

Domoticz MochadTCP Stack Buffer Overflow via MOCHAD_RFSEC strcpy()

Answer in brief

CVE-2026-71265 records a High severity (CVSS 7.5) vulnerability in Domoticz MochadTCP Stack Buffer Overflow via MOCHAD_RFSEC strcpy(). The current sources do not mark it as known exploited. The current feed maps domoticz/domoticz (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 5, 2026Updated Aug 26, 2026Source checked Sep 21, 2026First seen by HOL Aug 5, 2026Material review Aug 26, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.5
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps domoticz/domoticz (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
domoticz/domoticzgeneric	0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for domoticz/domoticz.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 26, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 5, 2026

Sources and claim methodology

Upstream source 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).

Quoted source text, attributed separately from HOL analysis.