Description
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.
Published: 2026-04-09
Score: 9.2 Critical
EPSS: < 1% Very Low
KEV: No
Impact: Unauthorized Access via Authentication Bypass
Action: Immediate Patch
AI Analysis

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Remediation

Vendor Workaround

OpenPLC_v3 is now considered to be end of life. Users are recommended to upgrade to OpenPLC Runtime v4 ( https://github.com/autonomy-logic/openplc-runtime ).

Tracking

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Advisories

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History

Tue, 28 Apr 2026 17:30:00 +0000

Type Values Removed Values Added
First Time appeared Openplcproject openplc V3 Firmware
CPEs cpe:2.3:h:openplcproject:openplc_v3:-:*:*:*:*:*:*:*
cpe:2.3:o:openplcproject:openplc_v3_firmware:-:*:*:*:*:*:*:*
Vendors & Products Openplcproject openplc V3 Firmware
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}


Fri, 10 Apr 2026 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 10 Apr 2026 09:00:00 +0000

Type Values Removed Values Added
First Time appeared Openplcproject
Openplcproject openplc V3
Vendors & Products Openplcproject
Openplcproject openplc V3

Thu, 09 Apr 2026 19:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Initialization of a resource with an insecure default in OpenPLC_V3
Weaknesses CWE-1188
References
Metrics cvssV4_0

{'score': 9.2, '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'}


Subscriptions

Openplcproject Openplc V3 Openplc V3 Firmware
cve-icon MITRE

Status: PUBLISHED

Assigner: icscert

Published:

Updated: 2026-04-10T18:02:22.971Z

Reserved: 2026-04-06T15:01:14.335Z

Link: CVE-2026-28205

cve-icon Vulnrichment

Updated: 2026-04-10T18:02:19.224Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-09T19:16:23.370

Modified: 2026-04-28T17:17:50.793

Link: CVE-2026-28205

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-10T09:29:52Z

Weaknesses