Cisco IOS XR 6.1.1 access control

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability was found in Cisco IOS XR 6.1.1 (Router Operating System). It has been rated as critical. Affected by this issue is an unknown functionality. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Cisco IOS XR 6.1.1 allows local users to execute arbitrary OS commands as root by leveraging admin privileges, aka Bug ID CSCva38349.

The weakness was disclosed 10/06/2016 as CSCva38349 as confirmed advisory (Website). The advisory is shared for download at This vulnerability is handled as CVE-2016-6428. The attack needs to be approached locally. The successful exploitation needs a simple authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 09/22/2022). The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability scanner Nessus provides a plugin with the ID 94354 (Cisco IOS XR Software Command-Line Interface Privilege Escalation (cisco-sa-20161005-iosxr)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (94354). The entries VDB-239690, VDB-239691, VDB-256731 and VDB-256732 are pretty similar.








  • end of life (old version)

CPE 2.3info

CPE 2.2info


VulDB CVSS-B Score: 🔍
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VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.8

VulDB Base Score: 7.8
VulDB Temp Score: 7.8
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Class: Access control
CWE: CWE-264

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

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Current Price Estimation: 🔍


Nessus ID: 94354
Nessus Name: Cisco IOS XR Software Command-Line Interface Privilege Escalation (cisco-sa-20161005-iosxr)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 103403
OpenVAS Name: Cisco IOS XR Software Command-Line Interface Privilege Escalation Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍


07/26/2016 🔍
10/06/2016 +72 days 🔍
10/06/2016 +0 days 🔍
10/06/2016 +0 days 🔍
10/07/2016 +1 days 🔍
09/22/2022 +2176 days 🔍



Advisory: CSCva38349
Status: Confirmed

CVE: CVE-2016-6428 (🔍)
SecurityTracker: 1036956 - Cisco IOS XR User Permissions Flaw Lets Local Users Obtain Root Privileges
SecurityFocus: 93416

scip Labs:
See also: 🔍


Created: 10/07/2016 01:09 PM
Updated: 09/22/2022 03:33 PM
Changes: 10/07/2016 01:09 PM (42), 05/17/2018 11:27 PM (21), 09/22/2022 03:27 PM (2), 09/22/2022 03:33 PM (1)
Complete: 🔍
Cache ID: 34:CC7:40


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