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CVE-2021-21734

6.5 · MEDIUM

Some PON MDU devices of ZTE stored sensitive information in plaintext, and users with login authority can obtain it by inputing command.

Published May 28, 2021CWE-312EPSS 0.51%

Overview

CVE-2021-21734 is a medium-severity vulnerability. It was published on May 28, 2021 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

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

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refsupport.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1015524Refsupport.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1015524

How CyberStrike helps

Frequently asked questions

What is CVE-2021-21734?

CVE-2021-21734 is a medium-severity vulnerability. It was published on May 28, 2021 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2021-21734?

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2021-21734?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-21734?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-21734 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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