CVE-2022-20759

A vulnerability in the web services interface for remote access VPN features of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, but unprivileged, remote attacker to elevate privileges to level 15. This vulnerability is due to improper separation of authentication and authorization scopes. An attacker could exploit this vulnerability by sending crafted HTTPS messages to the web services interface of an affected device. A successful exploit could allow the attacker to gain privilege level 15 access to the web management interface of the device, including via tools like ASDM or CSM. For FTD, the impact is lower because the management interface allows read-only access.

The risk includes the possibility of privilege escalation to full control over the device, which could lead to network security compromise. An attacker could change configuration, access sensitive data, or disrupt services.

It is recommended to apply available updates for Cisco ASA/FTD software. Also, restrict access to management interfaces and monitor logs for unusual HTTPS requests.