CVE-2020-3201 MEDIUM

CVE-2020-3201: Cisco IOS and IOS XE Software Tcl Denial of Service Vulnerability

Vendor Cisco
Product Cisco IOS 12.2(25)S
Weakness CWE-20 · Input validation
Published June 3, 2020
Last update November 15, 2024

CVSS base score

6.0/10
Attack vector Local
Attack complexity Low
Privileges required High
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

A vulnerability in the Tool Command Language (Tcl) interpreter of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, local attacker with privileged EXEC credentials to cause a denial of service (DoS) condition on an affected system. The vulnerability is due to insufficient input validation of data passed to the Tcl interpreter. An attacker could exploit this vulnerability by executing crafted Tcl arguments on an affected device. An exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.

Key dates

02Disclosure timeline

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