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CVE-2022-20691

MEDIUM CVSS: 5.3 Published: 2022-12-12 Modified: 2026-06-17

Description

A vulnerability in the Cisco Discovery Protocol functionality of Cisco ATA 190 Series Adaptive Telephone Adapter firmware could allow an unauthenticated, adjacent attacker to cause a DoS condition of an affected device. This vulnerability is due to missing length validation of certain Cisco Discovery Protocol packet header fields. An attacker could exploit this vulnerability by sending crafted Cisco Discovery Protocol packets to an affected device. A successful exploit could allow the attacker to cause the device to exhaust available memory and cause the service to restart. Cisco has released firmware updates that address this vulnerability.

Affected Platforms

Cisco Ata 190Cisco Ata 191Cisco Ata 192 FirmwareCisco Ata 192Cisco Ata 191 FirmwareCisco Ata 190 Firmware

Weakness Type

CWE-400, CWE-1284

References