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Vulnerabilities

Vulnerability · CVE-2025-4384

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.

Published May 6, 2025 · catalog updated Sep 5, 2025 · PcVue

Check if you run it

No confirmed exploitation is on record for CVE-2025-4384. EPSS is 0.13%. Act only if a listed version of PcVue is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.0
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.13%
Remediation
Version ranges on file
Affected products
vendor arcinfo PcVue 16.0 <16.3.0

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor arcinfo PcVue 16.0 <16.3.016.0 <16.3.0

How to fix CVE-2025-4384

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-4384. EPSS is 0.13%. Act only if a listed version of PcVue is installed.

Which versions are affected?

Compare what you have installed with arcinfo PcVue 16.0 <16.3.0 16.0 <16.3.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.13%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 6, 2025 · EUVD

    Detected

    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.

  2. Sep 5, 2025 · EUVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2025-4384

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-4384

    30-day exploitation probability 0.1%

    first.org
  • EUVDVulnerability recordEUVD-2025-13609

    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 devic

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.