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CVE-2026-28205— Initialization of a resource with an insecure default in OpenPLC_V3

Quick assessment

Affected
OpenPLC_V3 OpenPLC_V3
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenPLC Runtime version 3是Thiago Alves个人开发者的一个可编程逻辑控制器。 OpenPLC Runtime version 3存在安全漏洞，该漏洞源于资源初始化使用不安全默认值，可能导致攻击者通过API绕过身份验证访问系统。

AI Predicted 9.8 Difficulty: Easy EPSS 0.67% · P50

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-28205

Vulnerability Information
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Vulnerability Title
Initialization of a resource with an insecure default in OpenPLC_V3
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
不安全的默认资源初始化
Source: CVE Program / CVE List V5
Vulnerability Title
OpenPLC Runtime version 3 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenPLC Runtime version 3是Thiago Alves个人开发者的一个可编程逻辑控制器。 OpenPLC Runtime version 3存在安全漏洞，该漏洞源于资源初始化使用不安全默认值，可能导致攻击者通过API绕过身份验证访问系统。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
OpenPLC_V3 OpenPLC_V3 All versions -

II. Public POCs for CVE-2026-28205

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III. Intelligence Information for CVE-2026-28205

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Same Patch Batch · OpenPLC_V3 · 2026-04-09 · 3 CVEs total

CVE-2026-35556 Plaintext storage of a password in OpenPLC_V3
CVE-2026-35063 Missing Authorization in OpenPLC_V3

IV. Related Vulnerabilities

Same product: OpenPLC_V3
Same vendor: OpenPLC_V3
Same weakness: CWE-1188

V. Comments for CVE-2026-28205

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