Certificate validity not properly verified
Priority LOW 26CWE-298Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00133 2nd percentileScored 2026-11-07
Fix Fixed PcVue (arcinfo): 16.3.0, 16.2.5, 15.2.12
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA PcVue (arcinfo) Fixed in 16.3.0, 16.2.5, 15.2.12
Timeline
- 2026-10-02 Threatist record created from CVE-2025-4384
- 2026-10-03 Alias added: GHSA-2wpp-x4cq-cp8g
References
Advisory 1
More arcinfo vulnerabilities
- TI-2011-03570 Integer overflow in an unspecified ActiveX control in SVUIGrd.ocx in ARC Informatique… CVSS 2.0HIGH 9.3
- TI-2011-03569 An unspecified ActiveX control in SVUIGrd.ocx in ARC Informatique PcVue 6.0 through 10.0… CVSS 2.0HIGH 9.3
- TI-2020-16302 ARC Informatique PcVue Deserialization of Untrusted Data CVSS 3.1CRITICAL 9.8
- TI-2011-03571 An unspecified ActiveX control in SVUIGrd.ocx in ARC Informatique PcVue 6.0 through 10.0… CVSS 2.0MEDIUM 5.8
- TI-2026-12536 Weak encryption mechanism for User directory CVSS 4.0HIGH 8.4
- TI-2020-16303 ARC Informatique PcVue Access to Critical Private Variable via Public Method CVSS 3.1HIGH 7.5
Sources
- CVE-2025-4384 · CVE Program
- CVE-2025-4384 · NVD
- FIRST EPSS
- GHSA-2wpp-x4cq-cp8g · GitHub Advisory Database · CC BY 4.0
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