Insecure Default Initialization Vulnerability in OpenPLC V3
CVE-2026-28205

9.2CRITICAL

Key Information:

Vendor

Openplc V3

Status
Openplc V3
Vendor
CVE Published:
9 April 2026

What is CVE-2026-28205?

OpenPLC V3 is affected by a vulnerability that allows for the initialization of a resource with insecure defaults. This weakness could enable attackers to bypass the authentication mechanisms through an insecure API, potentially leading to unauthorized access to critical system functionalities.

Affected Version(s)

OpenPLC_V3 All versions

References

https://www.cisa.gov/news-events/ics-advisories/icsa-25-3...
government-resource

CVSS V4

Score:
9.2
Severity:
CRITICAL
Confidentiality:
Low
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Shriyans Sudhi (ss0x00) from Rochester Institute of Technology (RIT)
.