CVE-2021-34735: Cisco Ata 190 Firmware

High severity, CVSS 7.5. EPSS: 1.9% chance of exploitation in the next 30 days.

Multiple vulnerabilities in the Cisco ATA 190 Series Analog Telephone Adapter Software could allow an attacker to perform a command injection attack resulting in remote code execution or cause a denial of service (DoS) condition on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

Affected products

• Cisco Ata 190 Firmware: affected versions not specified
• Cisco Ata 191 Firmware: affected versions not specified
• Cisco Ata 192 Firmware: affected versions not specified

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