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CVE-2021-29379

8.8 · HIGH

An issue was discovered on D-Link DIR-802 A1 devices through 1.00b05.

Published Apr 12, 2021CWE-78EPSS 3.50%

Overview

CVE-2021-29379 is a high-severity vulnerability. It was published on April 12, 2021 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 requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

An issue was discovered on D-Link DIR-802 A1 devices through 1.00b05. Universal Plug and Play (UPnP) is enabled by default on port 1900. An attacker can perform command injection by injecting a payload into the Search Target (ST) field of the SSDP M-SEARCH discover packet. NOTE: This vulnerability only affects products that are no longer supported by the maintainer

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

Refcool-y.github.io/2021/03/02/DIR-802-OS-Command-InjectionRefsupportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10206Refwww.dlink.com/en/security-bulletin/Refcool-y.github.io/2021/03/02/DIR-802-OS-Command-InjectionRefsupportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10206Refwww.dlink.com/en/security-bulletin/

How CyberStrike helps

Frequently asked questions

What is CVE-2021-29379?

CVE-2021-29379 is a high-severity vulnerability. It was published on April 12, 2021 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2021-29379?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-29379?

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-2021-29379?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-29379 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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