VYPR
Medium severity5.3NVD Advisory· Published Aug 26, 2020· Updated Jun 17, 2026

CVE-2020-3496

CVE-2020-3496

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.

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Affected products

116

Patches

Vulnerability mechanics

References

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