Vulnerability Monitor

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CVE-2021-35979


An issue was discovered in Digi RealPort through 4.8.488.0. The 'encrypted' mode is vulnerable to man-in-the-middle attacks and does not perform authentication.


Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 8.1, indicating it can be exploited remotely over the network 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 35 products from digi, from digi, from digi and 32 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

2021-10-08T15:15:08.917

Last Modified

2024-11-21T06:12:52.853

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: Primary
    CWE-306

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application digi realport ≤ 1.9-40 Yes
Application digi realport ≤ 4.8.488.0 Yes
Operating System digi connectport_ts_8\/16_firmware * Yes
Hardware digi connectport_ts_8\/16 - No
Operating System digi connectport_lts_8\/16\/32_firmware * Yes
Hardware digi connectport_lts_8\/16\/32 - No
Operating System digi passport_integrated_console_server_firmware * Yes
Hardware digi passport_integrated_console_server - No
Operating System digi cm_firmware * Yes
Hardware digi cm - No
Operating System digi portserver_ts_firmware * Yes
Hardware digi portserver_ts - No
Operating System digi portserver_ts_mei_firmware * Yes
Hardware digi portserver_ts_mei - No
Operating System digi portserver_ts_mei_hardened_firmware * Yes
Hardware digi portserver_ts_mei_hardened - No
Operating System digi portserver_ts_m_mei_firmware * Yes
Hardware digi portserver_ts_m_mei - No
Operating System digi 6350-sr_firmware * Yes
Hardware digi 6350-sr - No
Operating System digi portserver_ts_p_mei_firmware * Yes
Hardware digi portserver_ts_p_mei - No
Operating System digi transport_wr11_xt_firmware * Yes
Hardware digi transport_wr11_xt - No
Operating System digi one_iap_family_firmware * Yes
Hardware digi one_iap_family - No
Operating System digi one_ia_firmware * Yes
Hardware digi one_ia - No
Operating System digi wr31_firmware * Yes
Hardware digi wr31 - No
Operating System digi wr44_r_firmware * Yes
Hardware digi wr44_r - No
Operating System digi connect_es_firmware * Yes
Hardware digi connect_es - No
Operating System digi wr21_firmware * Yes
Hardware digi wr21 - 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 digi'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.