Vulnerability Monitor

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CVE-2021-20590


Improper authentication vulnerability in GOT2000 series GT27 model VNC server versions 01.39.010 and prior, GOT2000 series GT25 model VNC server versions 01.39.010 and prior, GOT2000 series GT21 model GT2107-WTBD VNC server versions 01.40.000 and prior, GOT2000 series GT21 model GT2107-WTSD VNC server versions 01.40.000 and prior, GOT SIMPLE series GS21 model GS2110-WTBD-N VNC server versions 01.40.000 and prior and GOT SIMPLE series GS21 model GS2107-WTBD-N VNC server versions 01.40.000 and prior allows a remote unauthenticated attacker to gain unauthorized access via specially crafted packets when the "VNC server" function is used.


Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.5, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts integrity (unauthorized modifications), for affected systems. Impacting 12 products from mitsubishielectric, from mitsubishielectric, from mitsubishielectric and 9 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

2021-04-22T19:15:07.363

Last Modified

2024-11-21T05:46:50.060

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

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

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

8.6

Impact Score

2.9

Weaknesses
  • Type: Primary
    CWE-287

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System mitsubishielectric got2000_gt27_firmware ≤ 01.39.010 Yes
Hardware mitsubishielectric got2000_gt27 - No
Operating System mitsubishielectric got2000_gt25_firmware ≤ 01.39.010 Yes
Hardware mitsubishielectric got2000_gt25 - No
Operating System mitsubishielectric gt2107-wtbd_firmware ≤ 01.40.000 Yes
Hardware mitsubishielectric gt2107-wtbd - No
Operating System mitsubishielectric gt2107-wtsd_firmware ≤ 01.40.000 Yes
Hardware mitsubishielectric gt2107-wtsd - No
Operating System mitsubishielectric gs2110-wtbd-n_firmware ≤ 01.40.000 Yes
Hardware mitsubishielectric gs2110-wtbd-n - No
Operating System mitsubishielectric gs2107-wtbd-n_firmware ≤ 01.40.000 Yes
Hardware mitsubishielectric gs2107-wtbd-n - 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 mitsubishielectric'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.