CVE-2020-3216 Cisco IOS XE SD-WAN Software Authentication Bypass Vulnerability

Medium 6.8 Published 3 Jun 2020 Updated 15 Nov 2024

An unauthenticated physical attacker can bypass authentication to gain root shell access on Cisco IOS XE SD-WAN devices by interrupting boot initialization.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2020-3216?

CVE-2020-3216 is a medium-severity authentication bypass vulnerability in Cisco IOS XE SD-WAN Software, published on 3 Jun 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A vulnerability in Cisco IOS XE SD-WAN Software could allow an unauthenticated, physical attacker to bypass authentication and gain unrestricted access to the root shell of an affected device. The vulnerability exists because the affected software has insufficient authentication mechanisms for certain commands. An attacker could exploit this vulnerability by stopping the boot initialization of an affected device. A successful exploit could allow the attacker to bypass authentication and gain unrestricted access to the root shell of the affected device.

Weakness: CWE-287

Which versions are affected by CVE-2020-3216?

It affects 1 product.

Products include Cisco Ios Xe Sd-Wan.

How do I fix CVE-2020-3216?

No fix has been published for CVE-2020-3216 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2020-3216 being exploited?

There is no known exploitation of CVE-2020-3216 in the wild and no public exploit code.

Sources

Also known as GHSA-vx84-h8r2-7438.