CVE-2025-4384 – PcVue MQTT Certificate Validation Bypass

The following table lists the changes that have been made to the
CVE-2025-4384 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by 87c8e6ad-f0f5-4ca8-89e2-89f26d6ed932

    May. 06, 2025

    Action Type Old Value New Value
    Added Description The MQTT add-on of PcVue fails to verify that a remote device’s certificate has not already expired or has not yet become valid. This allows malicious devices to present certificates that are not rejected properly.

    The use of a client certificate reduces the risk for random devices to take advantage of this flaw.

    Added CVSS V4.0 AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:U/V:X/RE:M/U:Green
    Added CWE CWE-298
    Added Reference https://www.pcvue.com/security/#SB2025-3
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