What is CVE-2021-1542?

CVE-2021-1542 is a high-severity vulnerability in Cisco Small Business 220 Series Smart Plus Switches, classified under Improper Authentication. CVSS score: 7.2/10. Published 2021-06-16.

How severe is CVE-2021-1542?

High severity. CVSS v3 base score is 7.2 out of 10.

Auth bypass in Cisco Small Business 220 Series Smart Plus Switches

CVE-2021-1542

Multiple vulnerabilities in the web-based management interface of Cisco Small Business 220 Series Smart Switches could allow an attacker to do the following: Hijack a user session Execute arbitrary commands as a root user on the underlying operating system Conduct a cross-site scripting (XSS) attack Conduct an HTML injection attack For more information about these vulnerabilities, see the Details section of this advisory.

Vulnerability class: Broken Authentication

EPSS: 0.014 (69.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

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

Frequently asked questions

What is CVE-2021-1542?: CVE-2021-1542 is a high-severity vulnerability in Cisco Small Business 220 Series Smart Plus Switches, classified under Improper Authentication. CVSS score: 7.2/10. Published 2021-06-16.
How severe is CVE-2021-1542?: High severity. CVSS v3 base score is 7.2 out of 10.