Vulnerability Monitor

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CVE-2021-35535


Insecure Boot Image vulnerability in Hitachi Energy Relion Relion 670/650/SAM600-IO series allows an attacker who manages to get access to the front network port and to cause a reboot sequences of the device may exploit the vulnerability, where there is a tiny time gap during the booting process where an older version of VxWorks is loaded prior to application firmware booting, could exploit the vulnerability in the older version of VxWorks and cause a denial-of-service on the product. This issue affects: Hitachi Energy Relion 670 Series 2.2.2 all revisions; 2.2.3 versions prior to 2.2.3.3. Hitachi Energy Relion 670/650 Series 2.2.0 all revisions; 2.2.4 all revisions. Hitachi Energy Relion 670/650/SAM600-IO 2.2.1 all revisions.


Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 8.1, requiring local system access to exploit but requires specific conditions to be met without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 6 products from hitachienergy, from hitachienergy, from hitachienergy and 3 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2021, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.


Published

2021-11-18T16:15:08.450

Last Modified

2024-11-21T06:12:27.977

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 8.1 (HIGH)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:P/A:P

  • Access Vector: NETWORK
  • Access Complexity: MEDIUM
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: PARTIAL
  • Availability Impact: PARTIAL
Exploitability Score

8.6

Impact Score

6.4

Weaknesses
  • Type: Secondary
    CWE-1188
  • Type: Primary
    CWE-1188

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System hitachienergy relion_670_firmware ≤ 2.2.3.3 Yes
Operating System hitachienergy relion_670_firmware 2.2.0 Yes
Operating System hitachienergy relion_670_firmware 2.2.1 Yes
Operating System hitachienergy relion_670_firmware 2.2.2 Yes
Operating System hitachienergy relion_670_firmware 2.2.4 Yes
Hardware hitachienergy relion_670 - No
Operating System hitachienergy relion_650_firmware 2.2.0 Yes
Operating System hitachienergy relion_650_firmware 2.2.1 Yes
Operating System hitachienergy relion_650_firmware 2.2.4 Yes
Hardware hitachienergy relion_650 - No
Operating System hitachienergy relion_sam600-io_firmware 2.2.1 Yes
Hardware hitachienergy relion_sam600-io - No

References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For hitachienergy's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.