CVE intelligence and bounded remediation

CVE-2021-35526 — Hitachiabb-Powergrids Sdm600 Firmware security vulnerability

High CVSS 7.8

Backup file without encryption vulnerability is found in Hitachi ABB Power Grids System Data Manager – SDM600 allows attacker to gain access to sensitive information. This issue affects: Hitachi ABB Power Grids System Data Manager – SDM600 1.2 versions prior to FP2 HF6 (Build Nr. 1.2.14002.257).

Severity
High
CVSS
7.8 (3.1)
Published
2021-09-08
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-312, CWE-863

Affected products

  • hitachiabb-powergrids / sdm600_firmware

Matched remediation archetype

Authorization bypass, IDOR, and cross-tenant access

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Map object and action authorization checks across API, UI, batch, import/export, and background-job paths.
  • Identify tenant, ownership, role, and policy boundaries for affected resources and administrative operations.
  • Use synthetic fixtures to compare intended access matrices without accessing another user's real data.

Remediate safely

  • Enforce server-side authorization at each resource access and state transition using the authenticated principal and trusted tenant context.
  • Scope data queries by tenant and ownership; treat client-supplied identifiers, roles, and policy claims as untrusted.
  • Add deny-by-default policy tests for horizontal and vertical access across every affected transport.

Authoritative sources

Complete CVE record and remediation plan

The detailed catalog view below loads this exact record, its source evidence, and the full seven-phase agentic change plan.