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CVE-2025-7740 Hitachi Energy CVE debrief

CVE-2025-7740 is a High-severity default credentials weakness in Hitachi Energy SuprOS. According to the advisory summary, an authenticated local attacker could use this issue to gain access through an admin account created during product deployment. The vendor and CISA guidance focus on removing unwanted accounts, changing default passwords, and applying the recommended update.

Vendor
Hitachi Energy
Product
SuprOS
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-01-27
Original CVE updated
2026-02-12
Advisory published
2026-01-27
Advisory updated
2026-02-12

Who should care

Hitachi Energy SuprOS administrators, OT/ICS operators, system integrators, and security teams responsible for deployed SuprOS environments should review this issue, especially where default or deployment-time credentials may still be in use.

Technical summary

The supplied CSAF advisory describes a default credentials vulnerability affecting SuprOS. The stated impact is that an authenticated local attacker may obtain access through an admin account created during product deployment. The supplied CVSS v3.1 vector is AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H, with a score of 8.8 (High).

Defensive priority

High. Even though the attacker must already be authenticated locally, the potential outcome is broad administrative access and high impact to confidentiality, integrity, and availability in an industrial environment. This makes credential hygiene and prompt remediation important.

Recommended defensive actions

  • Apply the vendor-recommended update and take the recommended actions at the earliest convenience.
  • Remove unwanted accounts and/or change default passwords as directed in the Secure Deployment Guidelines.
  • Upon clean install, change the root password.
  • If updated from a previous version, remove unwanted accounts and/or change default passwords as directed in the Secure Deployment Guidelines.
  • Review the operational environment to assess exposure of affected products and update or upgrade if necessary.

Evidence notes

Source evidence is limited to the supplied CISA CSAF record and linked official references. The advisory text states that a default credentials vulnerability exists in SuprOS and that exploitation could allow an authenticated local attacker to gain access through an admin account created during product deployment. The remediations listed in the advisory call for changing default/root passwords, removing unwanted accounts, applying the vendor update, and assessing environmental exposure. The supplied CVSS vector and score are 8.8 High (AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).

Official resources

Initial public release date supplied in the corpus is 2026-01-27T00:00:00.000Z, with a later source modification/republication date of 2026-02-12T07:00:00.000Z. Do not treat the later date as the vulnerability discovery date; it reflects an