CVE-2026-2459

HIGHNVD 8.18.1—

8.1

A vulnerability exists in REB500 for an authenticated user with Installer role to access and alter the contents of directories that the role is not authorized to do so.

CVSS v3: 8.1
EG Score: 8.1(medium)
EPSS: 3.3%
KEV: Not listed

Published

February 24, 2026

Last Modified

April 6, 2026

References (1)

cybersecurity@hitachienergyhttps://publisher.hitachienergy.com/preview?DocumentID=8DBD000217&LanguageCode=en&DocumentPartId=&Action=Launch

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
2026-05-31 00:16 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
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2026-05-28 13:44 UTCepss_batch
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2026-05-27 13:40 UTCepss_batch
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2026-05-26 13:44 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-2026-2459?

CVE-2026-2459 is a high vulnerability published on February 24, 2026. A vulnerability exists in REB500 for an authenticated user with Installer role to access and alter the contents of directories that the role is not authorized to do so.

When was CVE-2026-2459 disclosed?

CVE-2026-2459 was first published in the National Vulnerability Database on February 24, 2026, with the most recent update on April 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-2459 actively exploited?

CVE-2026-2459 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-2459?

CVE-2026-2459 has a CVSS v3 base score of 8.1 (NVD).

How do I remediate CVE-2026-2459?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-2459, 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-2026-2459

📅 Published

🔄 Last Modified

🔗 References (1)