CVE-2021-34779
Cisco Small Business 220 Series Smart Switches Link Layer Discovery Protocol Vulnerabilities
Vexday Risk Score
13Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 4.3EPSS 0.5%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado
Lifecycle
06 Oct 2021Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Affected products
Cisco · Cisco Small Business 200 Series Smart Switches