Vulnerability Monitor

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CVE-2021-21734


Some PON MDU devices of ZTE stored sensitive information in plaintext, and users with login authority can obtain it by inputing command. This affects: ZTE PON MDU device ZXA10 F821 V1.7.0P3T22, ZXA10 F822 V1.4.3T6, ZXA10 F819 V1.2.1T5, ZXA10 F832 V1.1.1T7, ZXA10 F839 V1.1.0T8, ZXA10 F809 V3.2.1T1, ZXA10 F822P V1.1.1T7, ZXA10 F832 V2.00.00.01


Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 6.5, 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), for affected systems. Impacting 16 products from zte, from zte, from zte and 13 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

2021-05-28T12:15:07.603

Last Modified

2024-11-21T05:48:54.243

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.5 (MEDIUM)

CVSSv2 Vector

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

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

8.0

Impact Score

2.9

Weaknesses
  • Type: Primary
    CWE-312

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System zte zxa10_f821_firmware 1.7.0p3t22 Yes
Hardware zte zxa10_f821 - No
Operating System zte zxa10_f822_firmware 1.4.3t6 Yes
Hardware zte zxa10_f822 - No
Operating System zte zxa10_f819_firmware 1.2.1t5 Yes
Hardware zte zxa10_f819 - No
Operating System zte zxa10_f832_firmware 1.1.1t7 Yes
Hardware zte zxa10_f832 - No
Operating System zte zxa10_f839_firmware 1.1.0t8 Yes
Hardware zte zxa10_f839 - No
Operating System zte zxa10_f809_firmware 3.2.1t1 Yes
Hardware zte zxa10_f809 - No
Operating System zte zxa10_f822p_firmware 1.1.1t7 Yes
Hardware zte zxa10_f822p - No
Operating System zte zxa10_f832v2_firmware 2.00.00.01 Yes
Hardware zte zxa10_f832v2 - 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 zte'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.