CVE-2021-34778 | THREATINT

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

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.

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

Product status

Any version

affected

References

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

cve.org CVE-2021-34778

nvd.nist.gov CVE-2021-34778

Download JSON

https://cve.threatint.com/CVE/CVE-2021-34778

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