CVE-2020-3496 MEDIUM

CVE-2020-3496: Cisco Small Business Smart and Managed Switches Denial of Service Vulnerability

Vendor Cisco
Product Cisco Small Business 250 Series Smart Switches Software
Weakness CWE-20 · Input validation
Published August 26, 2020
Last update November 13, 2024

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

A vulnerability in the IPv6 packet processing engine of Cisco Small Business Smart and Managed Switches could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient validation of incoming IPv6 traffic. An attacker could exploit this vulnerability by sending a crafted IPv6 packet through an affected device. A successful exploit could allow the attacker to cause the switch management CLI to stop responding, resulting in a DoS condition. This vulnerability is specific to IPv6 traffic. IPv4 traffic is not affected.

Key dates

02Disclosure timeline

August 26, 2020 CVE published
November 13, 2024 Record updated