Vulnerability Monitor

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CVE-2021-20740


Hitachi Virtual File Platform Versions prior to 5.5.3-09 and Versions prior to 6.4.3-09, and NEC Storage M Series NAS Gateway Nh4a/Nh8a versions prior to FOS 5.5.3-08(NEC2.5.4a) and Nh4b/Nh8b, Nh4c/Nh8c versions prior to FOS 6.4.3-08(NEC3.4.2) allow remote authenticated attackers to execute arbitrary OS commands with root privileges via unspecified vectors.


Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 8.8, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction requiring only low-level privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 13 products from hitachi, from nec, from nec and 10 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

2021-06-28T01:15:07.440

Last Modified

2024-11-21T05:47:06.650

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 8.8 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: SINGLE
  • Confidentiality Impact: COMPLETE
  • Integrity Impact: COMPLETE
  • Availability Impact: COMPLETE
Exploitability Score

8.0

Impact Score

10.0

Weaknesses
  • Type: Primary
    CWE-78

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application hitachi virtual_file_platform < 6.4.3-09 Yes
Application hitachi virtual_file_platform < 5.5.3-09 Yes
Operating System nec nas_gateway_nh4a_firmware < fos_5.5.3-08\(nec2.5.4a\) Yes
Hardware nec nas_gateway_nh4a - No
Operating System nec nas_gateway_nh8a_firmware < fos_5.5.3-08\(nec2.5.4a\) Yes
Hardware nec nas_gateway_nh8a - No
Operating System nec nas_gateway_nh4b_firmware < fos_6.4.3-08\(nec3.4.2\) Yes
Hardware nec nas_gateway_nh4b - No
Operating System nec nas_gateway_nh8b_firmware < fos_6.4.3-08\(nec3.4.2\) Yes
Hardware nec nas_gateway_nh8b - No
Operating System nec nas_gateway_nh4c_firmware < fos_6.4.3-08\(nec3.4.2\) Yes
Hardware nec nas_gateway_nh4c - No
Operating System nec nas_gateway_nh8c_firmware < fos_6.4.3-08\(nec3.4.2\) Yes
Hardware nec nas_gateway_nh8c - 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 hitachi'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.