Improper Authentication in Cisco Small Business 220 Series Smart Switches - CVE-2021-1542

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Main Vulnerability Database Vulnerabilities #VU54173

Improper Authentication in Cisco Small Business 220 Series Smart Switches - CVE-2021-1542

Published: June 16, 2021


Vulnerability identifier: #VU54173
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2021-1542
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Cisco Small Business 220 Series Smart Switches

Detailed vulnerability description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to usage of weak sessionidentifiers. A remote unauthenticated attacker can guess active session identifier, bypass authentication process and gain unauthorized access to the application.


How to mitigate CVE-2021-1542

Install updates from vendor's website.

Sources