How severe is CVE-2021-34778?

This vulnerability has a severity rating of MEDIUM with a CVSS score of 4.3 out of 10.

What type of vulnerability is CVE-2021-34778?

This is classified as CWE-120, which is a common weakness in software security.

CVE-2021-34778 - MEDIUM Severity | CVSS 4.3

Vulnerability Description

Multiple vulnerabilities exist in the Link Layer Discovery Protocol (LLDP) implementation for Cisco Small Business 220 Series Smart Switches. An unauthenticated, adjacent attacker could perform the following: Execute code on the affected device or cause it to reload unexpectedly Cause LLDP database corruption on the affected device For more information about these vulnerabilities, see the Details section of this advisory. Note: LLDP is a Layer 2 protocol. To exploit these vulnerabilities, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent). Cisco has released firmware updates that address these vulnerabilities.

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