CVE-2024-20458: Cisco Ata 191 Firmware

High severity, CVSS 8.2. EPSS: 0.7% 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 view or delete the configuration or change the firmware on an affected device. This vulnerability is due to a lack of authentication on specific HTTP endpoints. An attacker could exploit this vulnerability by browsing to a specific URL. A successful exploit could allow the attacker to view or delete the configuration or change the firmware.

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.