What is CVE-2021-34777?

CVE-2021-34777 is a medium-severity vulnerability in Cisco Business_220-16p-2g, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 4.3/10. Published 2021-10-06.

How severe is CVE-2021-34777?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Buffer overflow in Cisco Business_220-16p-2g

CVE-2021-34777

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 d…

Vulnerability class: Buffer Overflow

EPSS: 0.004 (32.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

Affected products

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2021-34777?: CVE-2021-34777 is a medium-severity vulnerability in Cisco Business_220-16p-2g, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 4.3/10. Published 2021-10-06.
How severe is CVE-2021-34777?: Medium severity. CVSS v3 base score is 4.3 out of 10.