CVE-2023-20247 MEDIUM

CVE-2023-20247

Vendor Cisco
Product Cisco Adaptive Security Appliance (ASA) Software
Weakness CWE-288
Published November 1, 2023
Last update June 12, 2025

CVSS base score

5.0/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N

What the vulnerability does

01Description

A vulnerability in the remote access SSL VPN feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker to bypass a configured multiple certificate authentication policy and connect using only a valid username and password. This vulnerability is due to improper error handling during remote access VPN authentication. An attacker could exploit this vulnerability by sending crafted requests during remote access VPN session establishment. A successful exploit could allow the attacker to bypass the configured multiple certificate authentication policy while retaining the privileges and permissions associated with the original connection profile.

Key dates

02Disclosure timeline

November 1, 2023 CVE published
June 12, 2025 Record updated