Cisco IOS XR 6.2.11.BASE resource management

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability has been found in Cisco IOS XR 6.2.11.BASE (Router Operating System) and classified as problematic. This vulnerability affects an unknown part. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-399. As an impact it is known to affect availability.

The bug was discovered 06/07/2017. The weakness was shared 06/07/2017 by Cisco. with Cisco as cisco-sa-20170607-ncs as confirmed advisory (Website). The advisory is available at This vulnerability was named CVE-2017-6666 since 03/09/2017. Local access is required to approach this attack. A single authentication is necessary for exploitation. The technical details are unknown and an exploit is not available.

Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

To recover a device from the affected state, tear down and then re-establish the TE tunnel using the shutdown command followed by the no shutdown command in tunnel configuration mode.

The vulnerability is also documented in the databases at SecurityFocus (BID 98987) and SecurityTracker (ID 1038630).





CPE 2.3infoedit

CPE 2.2infoedit


VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 4.8

VulDB Base Score: 3.2
VulDB Temp Score: 3.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Cisco): 6.0
Vendor Vector (Cisco): 🔍

NVD Base Score: 6.0
NVD Vector: 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍


Class: Denial of service
CWE: CWE-399
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔍


OpenVAS ID: 103403
OpenVAS Name: Cisco Network Convergence System 5500 Series Routers Local Denial of Service Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfoedit

Threat: 🔍
Adversaries: 🔍
Geopolitics: 🔍
Economy: 🔍
Predictions: 🔍
Remediation: 🔍


Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍


03/09/2017 🔍
06/07/2017 +90 days 🔍
06/07/2017 +0 days 🔍
06/07/2017 +0 days 🔍
06/07/2017 +0 days 🔍
06/08/2017 +1 days 🔍
06/09/2017 +1 days 🔍
06/13/2017 +4 days 🔍
12/26/2020 +1292 days 🔍



Advisory: cisco-sa-20170607-ncs
Researcher: Cisco.
Organization: Cisco
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-6666 (🔍)
SecurityFocus: 98987 - Cisco IOS XR Software CVE-2017-6666 Local Denial of Service Vulnerability
SecurityTracker: 1038630

scip Labs:


Created: 06/09/2017 09:20 AM
Updated: 12/26/2020 05:00 PM
Changes: (1) advisory_person_name
Complete: 🔍


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