CVE-2026-100730NVD

Vulnerability Summary

A service console interface on openPDC and openHistorian deserializes a client-supplied data structure. On systems using Windows Authentication, an attacker must already be authenticated to reach this function; on systems without Windows Authentication, this is reachable by an unauthenticated network attacker. This allows an attacker to trigger deserialization of an arbitrary object graph, which could allow remote code execution under the privileges of the affected service account.

Severity Level

CRITICAL(9.3)

Published Date

Oct 9, 2026

Last Modified

Oct 9, 2026

Exploitation Status

No confirmed exploitation yet

EPSS Score (30-Day)

Data Pending

Root Weakness (CWE)

CWE-502: Unknown/Unlisted Weakness ↗

Refer to the official MITRE database for detailed architectural specifications regarding this weakness.

CVSS v4.0 Base Metrics — Score 9.3 (CRITICAL)

Attack VectorNetwork

Attack ComplexityLow

Attack RequirementsNone

Privileges RequiredNone

User InteractionNone

Confidentiality (Vulnerable System)High

Integrity (Vulnerable System)High

Availability (Vulnerable System)High

Confidentiality (Subsequent System)None

Integrity (Subsequent System)None

Availability (Subsequent System)None

CVSS v3.1 Base Metrics — Score 9.8 (CRITICAL)

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

Affected & Patched Versions

Affected Versions

Grid Protection Alliance openPDC < 2.9.477
Grid Protection Alliance openPDC < 2.9.482
Grid Protection Alliance openPDC (Docker image) < 2.9.477
Grid Protection Alliance openPDC (Docker image) < 2.9.482
Grid Protection Alliance openHistorian < 2.8.580
Grid Protection Alliance openHistorian < 2.8.585

Patched Versions

Grid Protection Alliance openPDC 2.9.477
Grid Protection Alliance openPDC 2.9.482
Grid Protection Alliance openPDC (Docker image) 2.9.477
Grid Protection Alliance openPDC (Docker image) 2.9.482
Grid Protection Alliance openHistorian 2.8.580
Grid Protection Alliance openHistorian 2.8.585

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