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CVE-2015-4200

7.8 · HIGH

Memory leak in the IPv6-to-IPv4 functionality in Cisco IOS 15.3S in the Performance Routing Engine (PRE) module on UBR devices allows remote attackers to cause a denial of service (memory consumpti…

Published Jun 23, 2015ciscoCWE-399EPSS 3.43%

Overview

CVE-2015-4200 is a high-severity vulnerability affecting cisco ios. It was published on June 23, 2015 and has a CVSS 2.0 base score of 7.8 (HIGH).

This vulnerability has a CVSS 2.0 base score of 7.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Memory leak in the IPv6-to-IPv4 functionality in Cisco IOS 15.3S in the Performance Routing Engine (PRE) module on UBR devices allows remote attackers to cause a denial of service (memory consumption) by triggering an error during CPE negotiation, aka Bug ID CSCug00885.

Remediation

Check the references section for vendor advisories and patches from cisco. Update ios 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

Reftools.cisco.com/security/center/viewAlert.x?alertId=39424Refwww.securityfocus.com/bid/75254Refwww.securitytracker.com/id/1032692Reftools.cisco.com/security/center/viewAlert.x?alertId=39424Refwww.securityfocus.com/bid/75254Refwww.securitytracker.com/id/1032692

How CyberStrike helps

Frequently asked questions

What is CVE-2015-4200?

CVE-2015-4200 is a high-severity vulnerability affecting cisco ios. It was published on June 23, 2015 and has a CVSS 2.0 base score of 7.8 (HIGH).

How severe is CVE-2015-4200?

This vulnerability has a CVSS 2.0 base score of 7.8, 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-2015-4200?

Check the references section for vendor advisories and patches from cisco. Update ios 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-2015-4200?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2015-4200 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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