EUVD-2026-21009
GHSA-3r9q-7hff-7fm4
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H/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:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
3Description
OpenPLC_V3 is vulnerable to an Initialization of a Resource with an Insecure Default vulnerability which could allow an attacker to gain access to the system by bypassing authentication via an API.
Analysis
Authentication bypass in OpenPLC_V3 allows unauthenticated remote attackers to gain unauthorized system access through insecurely configured API endpoints. The vulnerability stems from insecure default resource initialization (CWE-1188), enabling complete circumvention of authentication mechanisms. …
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Remediation
Within 24 hours: Identify all instances of OpenPLC_V3 in production and development environments using network scanning or asset management systems; document affected versions. Within 7 days: Implement network segmentation to restrict API endpoint access to trusted sources only; disable or restrict access to affected API endpoints if operationally feasible; enable comprehensive logging on all API requests. …
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External POC / Exploit Code
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