by Kastro
Paper/Archive/CVE-2026-100730

CVE-2026-100730

Grid Protection Alliance openPDC — Grid Protection Alliance openPDC and openHistorian Deserialization of Untrusted Data

EPSS 0.6%CVSS 9.8
critical.is priorityof 100
39
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 49.9.499 × 2010.0No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
openPDC< 2.9.4772.9.477CNA
openPDC< 2.9.4822.9.482CNA
openPDC (Docker image)< 2.9.4772.9.477CNA
openPDC (Docker image)< 2.9.4822.9.482CNA
openHistorian< 2.8.5802.8.580CNA
openHistorian< 2.8.5852.8.585CNA

Scores by source

icscert (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
icscert (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refcisa.gov/news-events/ics-advisories/icsa-26-281-02refgithub.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-281-02.json