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CVE-2014-7990

6.8 · MEDIUM

Cisco IOS XE 3.5E and earlier on WS-C3850, WS-C3860, and AIR-CT5760 devices does not properly parse the "request system shell" challenge response, which allows local users to obtain Linux root acce…

Published Nov 7, 2014ciscoCWE-20EPSS 0.34%

Overview

CVE-2014-7990 is a medium-severity vulnerability affecting cisco ios_xe. It was published on November 7, 2014 and has a CVSS 2.0 base score of 6.8 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 6.8, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

Cisco IOS XE 3.5E and earlier on WS-C3850, WS-C3860, and AIR-CT5760 devices does not properly parse the "request system shell" challenge response, which allows local users to obtain Linux root access by leveraging administrative privilege, aka Bug ID CSCur09815.

Remediation

Check the references section for vendor advisories and patches from cisco. Update ios_xe 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
ciscoios_xe0Affected

References

Reftools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-7990Reftools.cisco.com/security/center/viewAlert.x?alertId=36351Refwww.securityfocus.com/bid/70968Refwww.securitytracker.com/id/1031179Refexchange.xforce.ibmcloud.com/vulnerabilities/98529Reftools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-7990Reftools.cisco.com/security/center/viewAlert.x?alertId=36351Refwww.securityfocus.com/bid/70968Refwww.securitytracker.com/id/1031179Refexchange.xforce.ibmcloud.com/vulnerabilities/98529

How CyberStrike helps

Frequently asked questions

What is CVE-2014-7990?

CVE-2014-7990 is a medium-severity vulnerability affecting cisco ios_xe. It was published on November 7, 2014 and has a CVSS 2.0 base score of 6.8 (MEDIUM).

How severe is CVE-2014-7990?

This vulnerability has a CVSS 2.0 base score of 6.8, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2014-7990?

Check the references section for vendor advisories and patches from cisco. Update ios_xe 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-2014-7990?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2014-7990 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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