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High 8.9Published Jan 7, 2026
CVE-2026-22535FRAIL SECURITY IN MQTT PROTOCOL ALLOWS AN ATTACKER MODIFY CRITICAL PARAMETERS
Updated under an hour ago ()
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It affects EFACEC QC 60/90/120. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- CVSS
- 8.9 HIGH (v4.0, CNA)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
- Weakness (CWE)
- CWE-1366
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- S21sec
- NVD analysis
- Deferred
- Record last updated
- Jan 7, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.