CVE-2025-1066

CVE-2025-1066 is a critical-severity vulnerability with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

OpenPLC_V3 contains an arbitrary file upload vulnerability, which could be leveraged for malvertising or phishing campaigns.

Frequently asked questions

What is CVE-2025-1066?
OpenPLC_V3 contains an arbitrary file upload vulnerability, which could be leveraged for malvertising or phishing campaigns.
How severe is CVE-2025-1066?
CVE-2025-1066 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-1066 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-1066?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-1066 have an EU (EUVD) identifier?
Yes. CVE-2025-1066 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-1985.
When was CVE-2025-1066 published?
CVE-2025-1066 was published on 2025-02-06 and last updated on 2026-06-17.

References