CVE-2025-4384 Certificate validity not properly verified
Attackers can bypass certificate validation in PcVue's MQTT add-on by presenting expired or not-yet-valid certificates, allowing unauthorized device connections.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-4384?
CVE-2025-4384 is a medium-severity vulnerability in arcinfo PcVue, published on 6 May 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-298
Which versions are affected by CVE-2025-4384?
How do I fix CVE-2025-4384?
No fix has been published for CVE-2025-4384 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-4384 being exploited?
There is no known exploitation of CVE-2025-4384 in the wild and no public exploit code.
Sources
Also known as GHSA-2wpp-x4cq-cp8g.