CVE-2026-100730
Critical
Description
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.
SeverityCritical
CVSS9.8
Exploit probability—
ProductopenPDC
PublishedOct 9, 2026
First seenOct 9, 2026
Weakness typeCWE-502Deserialization of untrusted data
How to fix
Update
- Grid Protection Alliance openPDC2.9.477, 2.9.482 or later
- Grid Protection Alliance openPDC (Docker image)2.9.477, 2.9.482 or later
- Grid Protection Alliance openHistorian2.8.580, 2.8.585 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Grid Protection Alliance openPDC | v < 2.9.477, v < 2.9.482 | 2.9.477, 2.9.482 |
| Grid Protection Alliance openPDC (Docker image) | v < 2.9.477, v < 2.9.482 | 2.9.477, 2.9.482 |
| Grid Protection Alliance openHistorian | v < 2.8.580, v < 2.8.585 | 2.8.580, 2.8.585 |
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