CVE-2024-20421: Cisco Ata 191 Firmware

Medium severity, CVSS 6.5. EPSS: 0.2% chance of exploitation in the next 30 days.

A vulnerability in the web-based management interface of Cisco ATA 190 Series Analog Telephone Adapter firmware could allow an unauthenticated, remote attacker to conduct a cross-site request forgery (CSRF) attack and perform arbitrary actions on an affected device. This vulnerability is due to insufficient CSRF protections for the web-based management interface of an affected device. An attacker could exploit this vulnerability by persuading a user to follow a crafted link. A successful exploit could allow the attacker to perform arbitrary actions on the affected device with the privileges of the targeted user.

Affected products

• Cisco Ata 191 Firmware: before 12.0.2 (fixed in 12.0.2); before 11.2.5 (fixed in 11.2.5)
• Cisco Ata 192 Firmware: before 11.2.5 (fixed in 11.2.5)

Published 2024-10-16. Last modified 2026-06-17.