CVE-2021-34778

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.

CVSS 3.1

4.3 MEDIUMCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS

0.41% probability · 35th percentile

Public exploits

None in Exploit-DB

CISA KEV

Not listed

Weakness

CWE-120

Affected

cisco/business 220-8t-e-2g firmware · cisco/business 220-8p-e-2g firmware · cisco/business 220-8fp-e-2g firmware · cisco/business 220-16t-2g firmware · cisco/business 220-16p-2g firmware · cisco/business 220-24t-4g firmware · cisco/business 220-24p-4g firmware · cisco/business 220-24fp-4g firmware · cisco/business 220-48t-4g firmware · cisco/business 220-48p-4g firmware · cisco/business 220-24t-4x firmware · cisco/business 220-24p-4x firmware · cisco/business 220-24fp-4x firmware · cisco/business 220-48t-4x firmware · cisco/business 220-48p-4x firmware · cisco/business 220-48fp-4x firmware

Source

psirt@cisco.com

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.