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CVE-2001-0864

7.5 · HIGH

Cisco 12000 with IOS 12.0 and line cards based on Engine 2 does not properly handle the implicit "deny ip any any" rule in an outgoing ACL when the ACL contains exactly 448 entries, which can allow…

Published Dec 6, 2001ciscoEPSS 1.39%

Overview

CVE-2001-0864 is a high-severity vulnerability affecting cisco 12000_router. It was published on December 6, 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

Cisco 12000 with IOS 12.0 and line cards based on Engine 2 does not properly handle the implicit "deny ip any any" rule in an outgoing ACL when the ACL contains exactly 448 entries, which can allow some outgoing packets to bypass access restrictions.

Remediation

Check the references section for vendor advisories and patches from cisco. Update 12000_router 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.ciac.org/ciac/bulletins/m-018.shtmlRefwww.cisco.com/warp/public/707/GSR-ACL-pub.shtmlRefwww.osvdb.org/1986Refwww.securityfocus.com/bid/3536Refexchange.xforce.ibmcloud.com/vulnerabilities/7553Refwww.ciac.org/ciac/bulletins/m-018.shtmlRefwww.cisco.com/warp/public/707/GSR-ACL-pub.shtmlRefwww.osvdb.org/1986Refwww.securityfocus.com/bid/3536Refexchange.xforce.ibmcloud.com/vulnerabilities/7553

How CyberStrike helps

Frequently asked questions

What is CVE-2001-0864?

CVE-2001-0864 is a high-severity vulnerability affecting cisco 12000_router. It was published on December 6, 2001 and has a CVSS 2.0 base score of 7.5 (HIGH).

How severe is CVE-2001-0864?

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-2001-0864?

Check the references section for vendor advisories and patches from cisco. Update 12000_router 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-2001-0864?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2001-0864 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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