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CVE-2023-20269

CWE-288

High

74.1

RPS

Description

A vulnerability in the remote access VPN feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to conduct a brute force attack in an attempt to identify valid username and password combinations or an authenticated, remote attacker to establish a clientless SSL VPN session with an unauthorized user. This vulnerability is due to improper separation of authentication, authorization, and accounting (AAA) between the remote access VPN feature and the HTTPS management and site-to-site VPN features. An attacker could exploit this vulnerability by specifying a default connection profile/tunnel group while conducting a brute force attack or while establishing a clientless SSL VPN session using valid credentials. A successful exploit could allow the attacker to achieve one or both of the following: Identify valid credentials that could then be used to establish an unauthorized remote access VPN session. Establish a clientless SSL VPN session (only when running Cisco ASA Software Release 9.16 or earlier). Notes: Establishing a client-based remote access VPN tunnel is not p…

Source: NVD

Signals

CVSS
5.0
Medium · v3.1
EPSS
25.45%
Probability of exploitation in the next 30 days (FIRST)
CISA KEV
In CISA KEV since Sept 2023
Fix commit
No known fix commit
Sources: MoreFixes, FreshFixes
Weakness
CWE-288
CWE-288, CWE-863
Published
6 Sept 2023
Last modified 11 Aug 2026

How to read these signals: RPS · EPSS · CISA KEV · Data sources

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Data as of 7 Oct 2026, 05:16 UK time

CVE-2023-20269 · RPS 74.1 · DevSecure Intelligence