CVE-2021-34757: Cisco Business 220-16p-2g Firmware

Medium severity, CVSS 5.5. EPSS: 0.6% chance of exploitation in the next 30 days.

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.

Affected products

• Cisco Business 220-16p-2g Firmware: up to and including 1.2.0.6
• Cisco Business 220-16t-2g Firmware: up to and including 1.2.0.6
• Cisco Business 220-24fp-4g Firmware: up to and including 1.2.0.6
• Cisco Business 220-24fp-4x Firmware: up to and including 1.2.0.6
• Cisco Business 220-24p-4g Firmware: up to and including 1.2.0.6
• Cisco Business 220-24p-4x Firmware: up to and including 1.2.0.6
• Cisco Business 220-24t-4g Firmware: up to and including 1.2.0.6
• Cisco Business 220-24t-4x Firmware: up to and including 1.2.0.6
• Cisco Business 220-48fp-4x Firmware: up to and including 1.2.0.6
• Cisco Business 220-48p-4g Firmware: up to and including 1.2.0.6
• Cisco Business 220-48p-4x Firmware: up to and including 1.2.0.6
• Cisco Business 220-48t-4g Firmware: up to and including 1.2.0.6
• Cisco Business 220-48t-4x Firmware: up to and including 1.2.0.6
• Cisco Business 220-8fp-E-2g Firmware: up to and including 1.2.0.6
• Cisco Business 220-8p-E-2g Firmware: up to and including 1.2.0.6
• Cisco Business 220-8t-E-2g Firmware: up to and including 1.2.0.6

Published 2021-10-06. Last modified 2026-06-17.