CVE-2021-21740
2.4 · LOWOverview
CVE-2021-21740 is a low-severity vulnerability affecting zte zxhn_h2640_firmware. It was published on August 9, 2021 and has a CVSS 3.1 base score of 2.4 (LOW).
This vulnerability has a CVSS 3.1 base score of 2.4, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
Technical Description
There is an information leak vulnerability in the digital media player (DMS) of ZTE's residential gateway product. The attacker could insert the USB disk with the symbolic link into the residential gateway, and access unauthorized directory information through the symbolic link, causing information leak.
Remediation
Check the references section for vendor advisories and patches from zte. Update zxhn_h2640_firmware to the latest patched version. 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.
Affected Products
| Vendor | Product | Versions | Status |
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Frequently Asked Questions
What is CVE-2021-21740?
CVE-2021-21740 is a low-severity vulnerability affecting zte zxhn_h2640_firmware. It was published on August 9, 2021 and has a CVSS 3.1 base score of 2.4 (LOW).
How severe is CVE-2021-21740?
This vulnerability has a CVSS 3.1 base score of 2.4, rated LOW. 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-2021-21740?
Check the references section for vendor advisories and patches from zte. Update zxhn_h2640_firmware to the latest patched version. 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-2021-21740?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-21740 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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