Cisco IOS XE Web UI Authentication Bypass
A critical authentication bypass vulnerability in the web management interface of Cisco IOS XE Software allows an unauthenticated, remote attacker to bypass authentication controls and gain administrative access to affected devices.
This section explains the vulnerability in everyday language, so anyone can understand the risk and impact.
This is a serious security flaw in Cisco networking equipment that runs IOS XE software. The vulnerability allows hackers to completely bypass the login screen of the web interface that administrators use to manage these devices. This means an attacker could gain full control of the network device without needing any password or username.
Think of it like finding a hidden door that lets someone walk straight into a secure building while completely avoiding the security desk and badge readers. Once inside, they would have the same access as the building administrator.
Affected Products
Remediation
1. Upgrade affected devices to IOS XE version 17.9.4 or later
2. As temporary mitigation, disable the web UI interface if not required
3. Implement access control lists (ACLs) to restrict management interface access to trusted IP addresses
4. Monitor system logs for unauthorized access attempts
Sources & References
- vendorCisco Security Advisory
- advisoryCISA KEV Catalog