CVE-2026-26289

HIGHNVD 8.28.2—

8.2

PowerSYSTEM Center REST API endpoint for device account export allows an authenticated user with limited permissions to expose sensitive information normally restricted to administrative permissions only.

CVSS v3: 8.2
EG Score: 8.2(high)
EPSS: 10.2%
KEV: Not listed

Published

May 12, 2026

Last Modified

May 13, 2026

Advisory Details (2)

Auto-updated May 12, 2026

Patch available. Sources: cisa.

cisa Patch Available

Subnet Solutions PowerSYSTEM Center | CISA

https://www.cisa.gov/news-events/ics-advisories/icsa-26-132-02

generic

CSAF/csaf_files/OT/white/2026/icsa-26-132-02.json at develop · cisagov/CSAF · GitHub

https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-132-02.json

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-863Incorrect Authorization

Data Freshness Timeline

(refreshed 17× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:30 UTCepss_batch
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2026-05-31 00:16 UTCepss_batch
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2026-05-24 16:59 UTCepss_batch
2026-05-23 15:21 UTCepss_batch
2026-05-22 21:16 UTCepss_batch

Frequently asked(5)

What is CVE-2026-26289?

CVE-2026-26289 is a high vulnerability published on May 12, 2026. PowerSYSTEM Center REST API endpoint for device account export allows an authenticated user with limited permissions to expose sensitive information normally restricted to administrative permissions only.

When was CVE-2026-26289 disclosed?

CVE-2026-26289 was first published in the National Vulnerability Database on May 12, 2026, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-26289 actively exploited?

CVE-2026-26289 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 10.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-26289?

CVE-2026-26289 has a CVSS v3 base score of 8.2 (NVD).

How do I remediate CVE-2026-26289?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-26289, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2026-26289

📅 Published

🔄 Last Modified

📋 Advisory Details (2)