All vulnerabilities
CVE-2026-85479

Grid Protection Alliance openPDC and openHistorian Missing Authentication for Critical Function

Grid Protection Alliance openPDC
Open in ThreatlineRecord JSON
CVSS
5.3Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.25%Chance of exploitation activity in the next 30 days, higher than 15% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in2.9.477Also 2.9.482, 2.8.580 and 1 moreCVE List
Published9 Oct 2026Updated 11 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

The STTP-based data publisher on openPDC accepts network connections without authentication in its default configuration. An unauthenticated network attacker can connect to this interface and exchange data with it.

Text from CVE List

Affected versions 8

  • openPDCaffected: all versions before 2.9.477CVE List
  • openPDCaffected: all versions before 2.9.482CVE List
  • openPDCunaffected: 2.9.482CVE List
  • openPDC (Docker image)affected: all versions before 2.9.477CVE List
  • openPDC (Docker image)affected: all versions before 2.9.482CVE List
  • openHistorianaffected: all versions before 2.8.580CVE List
  • openHistorianaffected: all versions before 2.8.585CVE List
  • openHistorianunaffected: 2.8.585CVE List

References 2