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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.

PUBLISHED Reserved 2021-06-15 | Published 2021-10-06 | Updated 2024-11-07 | Assigner cisco




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

Problem types

CWE-120

Product status

Any version
affected

References

tools.cisco.com/...ry/cisco-sa-sb220-lldp-multivuls-mVRUtQ8T (20211006 Cisco Small Business 220 Series Smart Switches Link Layer Discovery Protocol Vulnerabilities) vendor-advisory

tools.cisco.com/...ry/cisco-sa-sb220-lldp-multivuls-mVRUtQ8T (20211006 Cisco Small Business 220 Series Smart Switches Link Layer Discovery Protocol Vulnerabilities) vendor-advisory

cve.org (CVE-2021-34777)

nvd.nist.gov (CVE-2021-34777)

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