What is CVE-2021-34744?

CVE-2021-34744 is a medium-severity vulnerability in Cisco Business 220-16p-2g, classified under CWE-540. CVSS score: 4.9/10. Published 2021-10-06.

How severe is CVE-2021-34744?

Medium severity. CVSS v3 base score is 4.9 out of 10.

Vulnerability in Cisco Business 220-16p-2g

CVE-2021-34744

Multiple vulnerabilities in Cisco Business 220 Series Smart Switches firmware could allow an attacker with Administrator privileges to access sensitive login credentials or reconfigure the passwords on the user account. For more information about these vulnerabilities, see the Details section of this advisory.

Published 2021-10-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.007 (54.1th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 54.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Weakness classification (CWE)

References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb-hardc… (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2021-34744?: CVE-2021-34744 is a medium-severity vulnerability in Cisco Business 220-16p-2g, classified under CWE-540. CVSS score: 4.9/10. Published 2021-10-06.
How severe is CVE-2021-34744?: Medium severity. CVSS v3 base score is 4.9 out of 10.