CVE-2020-3363CWE-20

Cisco Small Business Smart and Managed Switches Denial of Service Vulnerability

High · published August 17, 2020

CVSS v3.0
8.6
EPSS
2%
Percentile
78.6
In the wild
Unconfirmed
What it is

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 an unexpected reboot of the switch, leading to a DoS condition. This vulnerability is specific to IPv6 traffic. IPv4 traffic is not affected.

The record
Technical detail
CVSS v3.0
8.6 · HIGH
Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.01819 · 78.6th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2020-08-17T18:01Z
EPSS history
Timeline
  • 17 AUG 18:01Z
    Cisco Small Business Smart and Managed Switches Denial of Service Vulnerability
    cvelistv5