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CVE-2020-25014

9.8 · CRITICAL

A stack-based buffer overflow in fbwifi_continue.cgi on Zyxel UTM and VPN series of gateways running firmware version V4.30 through to V4.55 allows remote unauthenticated attackers to execute arbit…

Published Nov 27, 2020CWE-787EPSS 4.44%

Overview

CVE-2020-25014 is a critical-severity vulnerability. It was published on November 27, 2020 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

A stack-based buffer overflow in fbwifi_continue.cgi on Zyxel UTM and VPN series of gateways running firmware version V4.30 through to V4.55 allows remote unauthenticated attackers to execute arbitrary code via a crafted http packet.

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

Refbusinessforum.zyxel.com/categories/security-news-and-releaseRefwww.zyxel.com/support/Zyxel-security-advisory-for-buffer-overflow-vulnerability.shtmlRefbusinessforum.zyxel.com/categories/security-news-and-releaseRefwww.zyxel.com/support/Zyxel-security-advisory-for-buffer-overflow-vulnerability.shtml

How CyberStrike helps

Frequently asked questions

What is CVE-2020-25014?

CVE-2020-25014 is a critical-severity vulnerability. It was published on November 27, 2020 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2020-25014?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2020-25014?

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-2020-25014?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2020-25014 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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