CVE-2020-3218 HIGH

CVE-2020-3218: Cisco IOS XE Software Web UI Remote Code Execution Vulnerability

Vendor Cisco
Product Cisco IOS XE Software 16.6.1
Weakness CWE-20 · Input validation
Published June 3, 2020
Last update November 15, 2024

CVSS base score

7.2/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

A vulnerability in the web UI of Cisco IOS XE Software could allow an authenticated, remote attacker with administrative privileges to execute arbitrary code with root privileges on the underlying Linux shell. The vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by first creating a malicious file on the affected device itself and then uploading a second malicious file to the device. A successful exploit could allow the attacker to execute arbitrary code with root privileges or bypass licensing requirements on the device.

Key dates

02Disclosure timeline

June 3, 2020 CVE published
November 15, 2024 Record updated