HarborGuard / CVE
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HIGHCVE-2026-22535Published Modified CNA S21sec

CVE-2026-22535: FRAIL SECURITY IN MQTT PROTOCOL ALLOWS AN ATTACKER MODIFY CRITICAL PARAMETERS

An attacker with the ability to interact through the network and with access credentials, could, thanks to the unsecured (unencrypted) MQTT communications protocol, write on the server topics of the board that controls the MQTT communications

Metrics

CVSS v4.0
8.9
Severity
HIGH
Fixed in
Affected Products
1
Affected packages
  • EFACEC / QC 60/90/120
    8
CVSS Vector
CVSS:4.0/AV:A/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H