CVE-2020-3209 MEDIUM

CVE-2020-3209: Cisco IOS XE Software Digital Signature Verification Bypass Vulnerability

Vendor Cisco
Product Cisco IOS XE Software 3.2.0SG
Weakness CWE-347
Published June 3, 2020
Last update November 15, 2024

CVSS base score

6.8/10
Attack vector Physical
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

A vulnerability in software image verification in Cisco IOS XE Software could allow an unauthenticated, physical attacker to install and boot a malicious software image or execute unsigned binaries on an affected device. The vulnerability is due to an improper check on the area of code that manages the verification of the digital signatures of system image files during the initial boot process. An attacker could exploit this vulnerability by loading unsigned software on an affected device. A successful exploit could allow the attacker to install and boot a malicious software image or execute unsigned binaries on the targeted device.

Key dates

02Disclosure timeline

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