CVE-2022-20766

Name of the Vulnerable Software and Affected Versions Cisco ATA 190 Series Adaptive Telephone Adapter firmware (affected versions not specified)

Description A vulnerability in the Cisco Discovery Protocol functionality could allow an unauthenticated, remote attacker to cause a Denial of Service (DoS) condition on an affected device. This issue is due to an out-of-bounds read when processing Cisco Discovery Protocol packets. An attacker could exploit this by sending crafted packets to an affected device, potentially causing a service restart.

Recommendations For the Cisco ATA 190 Series Adaptive Telephone Adapter firmware, update to the latest firmware version released by Cisco that addresses this issue. As a temporary workaround, consider restricting access to the Cisco Discovery Protocol functionality until a patch is available.