CVE-2020-3496

Cisco Small Business Smart and Managed Switches Denial of Service Vulnerability

Description

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.

Category

5.3
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.35%
Vendor Advisory cisco.com
Affected: Cisco Cisco Small Business 250 Series Smart Switches Software
Published at:
Updated at:

References

Link Tags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sbss-ipv6-dos-tsgqbffW vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-3496?
CVE-2020-3496 has been scored as a medium severity vulnerability.
How to fix CVE-2020-3496?
To fix CVE-2020-3496, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-3496 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-3496 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-3496?
CVE-2020-3496 affects Cisco Cisco Small Business 250 Series Smart Switches Software.
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