Network Mapping Vulnerability in openPDC by CISA
CVE-2026-101022

5.3MEDIUM

Key Information:

Vendor

Grid Protection Alliance

Status
Openpdc
Openpdc (docker Image)
Openhistorian
Vendor
CVE Published:
9 October 2026

What is CVE-2026-101022?

A vulnerability in the Modbus connection feature of openPDC allows authenticated users to specify target internal addresses and ports without restriction. This lack of control enables a user to probe and connect to arbitrary internal network destinations, thus revealing information about accessible parts of the network. Repeated connection attempts can facilitate the mapping of the internal network infrastructure, posing risks to network security and confidentiality.

Affected Version(s)

openHistorian 0 < 2.8.580

openHistorian 0 < 2.8.585

openPDC 0 < 2.9.477

References

https://www.cisa.gov/news-events/ics-advisories/icsa-26-2...
https://github.com/cisagov/CSAF/blob/develop/csaf_files/O...

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Shubham Raj (Cipher) of Causal Security reported this vulnerability to CISA.
.