CVE-2020-3403 MEDIUM

CVE-2020-3403: Cisco IOS XE Software Command Injection Vulnerability

Vendor Cisco
Product Cisco IOS XE Software
Weakness CWE-78
Published September 24, 2020
Last update November 13, 2024

CVSS base score

6.7/10
Attack vector Local
Attack complexity Low
Privileges required High
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

A vulnerability in the CLI of Cisco IOS XE Software could allow an authenticated, local attacker to inject a command to the underlying operating system that will execute with root privileges upon the next reboot of the device. The authenticated user must have privileged EXEC permissions on the device. The vulnerability is due to insufficient protection of values passed to a script that executes during device startup. An attacker could exploit this vulnerability by writing values to a specific file. A successful exploit could allow the attacker to execute commands with root privileges each time the affected device is restarted.

Key dates

02Disclosure timeline

September 24, 2020 CVE published
November 13, 2024 Record updated