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CVE-2020-5756

8.8 · HIGH

Grandstream GWN7000 firmware version 1.0.9.4 and below allows authenticated remote users to modify the system's crontab via undocumented API.

Published Jul 17, 2020CWE-489EPSS 2.47%

Overview

CVE-2020-5756 is a high-severity vulnerability. It was published on July 17, 2020 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

Grandstream GWN7000 firmware version 1.0.9.4 and below allows authenticated remote users to modify the system's crontab via undocumented API. An attacker can use this functionality to execute arbitrary OS commands on the router.

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

Refwww.tenable.com/security/research/tra-2020-41Refwww.tenable.com/cve/CVE-2020-5756Refwww.tenable.com/security/research/tra-2020-41

How CyberStrike helps

Frequently asked questions

What is CVE-2020-5756?

CVE-2020-5756 is a high-severity vulnerability. It was published on July 17, 2020 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2020-5756?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2020-5756?

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-2020-5756?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2020-5756 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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