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CVE-2001-1135

7.5 · HIGH

ZyXEL Prestige 642R and 642R-I routers do not filter the routers' Telnet and FTP ports on the external WAN interface from inside access, allowing someone on an internal computer to reconfigure the…

Published Aug 14, 2001zyxelEPSS 1.50%

Overview

CVE-2001-1135 is a high-severity vulnerability affecting zyxel prestige. It was published on August 14, 2001 and has a CVSS 2.0 base score of 7.5 (HIGH).

This vulnerability has a CVSS 2.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

ZyXEL Prestige 642R and 642R-I routers do not filter the routers' Telnet and FTP ports on the external WAN interface from inside access, allowing someone on an internal computer to reconfigure the router, if the password is known.

Remediation

Check the references section for vendor advisories and patches from zyxel. Update prestige 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

VendorProductVersionsStatus

References

Refwww.securityfocus.com/archive/1/203022Refwww.securityfocus.com/archive/1/203592Refwww.securityfocus.com/archive/1/204439Refwww.securityfocus.com/archive/1/214971Refwww.securityfocus.com/bid/3346Refexchange.xforce.ibmcloud.com/vulnerabilities/7146Refwww.securityfocus.com/archive/1/203022Refwww.securityfocus.com/archive/1/203592Refwww.securityfocus.com/archive/1/204439Refwww.securityfocus.com/archive/1/214971

How CyberStrike helps

Frequently asked questions

What is CVE-2001-1135?

CVE-2001-1135 is a high-severity vulnerability affecting zyxel prestige. It was published on August 14, 2001 and has a CVSS 2.0 base score of 7.5 (HIGH).

How severe is CVE-2001-1135?

This vulnerability has a CVSS 2.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2001-1135?

Check the references section for vendor advisories and patches from zyxel. Update prestige 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-2001-1135?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2001-1135 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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