title: Cisco IOS XE SD-WAN Software Default Credentials Vulnerability
description: A vulnerability in Cisco IOS XE SD-WAN Software could allow an unauthenticated, local attacker to gain unauthorized access to an affected device. The vulnerability is due to the existence of default credentials within the default configuration of an affected device. An attacker who has access to an affected device could log in with elevated privileges. A successful exploit could allow the attacker to take complete control of the device. This vulnerability affects Cisco devices that are running Cisco IOS XE SD-WAN Software releases 16.11 and earlier.
problem types: CWE-255 Credentials Management
affected:
{
product: Cisco IOS XE SD-WAN Software
vendor: Cisco
versions:
status: affected, version: 16.11 and earlier
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: LOCAL
availabilityImpact: HIGH
baseScore: 8.4
baseSeverity: HIGH
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
version: 3.1
]
exploits: The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
solutions: Cisco fixed this vulnerability in Cisco IOS XE SD-WAN Software Release 16.12.1.
workarounds: To check for the presence of default credentials, customers can use the show running-configuration | include username admin command within the Cisco IOS XE SD-WAN Software command line. To remove the default credentials, customers can use the config-transaction and no username admin commands.