Is there a public exploit for CVE-2026-75520?

No public exploit for CVE-2026-75520 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-75520?

CVE-2026-75520 scores CVSS 5.4 (v3.1), rated medium. EPSS puts the chance of exploitation in the next 30 days at 0.28%.

What does CVE-2026-75520 affect?

CVE-2026-75520 affects Domoticz Domoticz.

5.4 Medium

Domoticz is a free, open source home automation system for Linux, Windows, macOS, and Raspberry Pi.

CVE-2026-75520

Domoticz is a free, open source home automation system for Linux, Windows, macOS, and Raspberry Pi. Prior to 2026.3, the udevices JSON command handler, CmdUpdateDevices in main/WebServerCmds.cpp, performed no session.rights check before invoking a Lua parser script, while its sibling command handlers gate access by role. A low-privilege authenticated user could trigger execution of an existing operator-installed Lua parser script with attacker-controlled input through the GET /json.htm endpoint with type=command and param=udevices. The script parameter also lacked a .. path-traversal guard: CLuaHandler::executeLuaScript in main/LuaHandler.cpp constructed the filename from the parser directory and the supplied script name before passing it to luaLloadfile. Execution is limited to already-installed valid Lua files; this is not arbitrary code execution, and the advisory states that file-write and upload paths require administrator privileges. This issue is addressed in version 2026.3.

Assessment

CVSS: 5.4 (v3.1)
Severity: Medium
EPSS: 0.28% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 28 October 2026
Last updated: 3 November 2026
Affected: Domoticz · Domoticz
Assigner: GitHub_M

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

At the source

EUVD (ENISA)

References

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