Cisco Adaptive Security Appliance and Firepower Threat Defense Unauthorized Access Vulnerability

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 possible as these default connection profiles/tunnel groups do not and cannot have an IP address pool configured. This vulnerability does not allow an attacker to bypass authentication. To successfully establish a remote access VPN session, valid credentials are required, including a valid second factor if multi-factor authentication (MFA) is configured. Cisco will release software updates that address this vulnerability. There are workarounds that address this vulnerability.

Faiblesse : CWE-288, CWE-863

Patcharo affiche cette vulnérabilité à titre d’information mais ne compare pas encore les versions de ce produit.

• Cisco Cisco Adaptive Security Appliance (ASA) Software · 9.8.1, 9.8.1.5, 9.8.1.7, 9.8.2, 9.8.2.8, 9.8.2.14, 9.8.2.15, 9.8.2.17, 9.8.2.20, 9.8.2.24, 9.8.2.26, 9.8.2.28 et 158 autres
• Cisco Cisco Firepower Threat Defense Software · 6.2.3, 6.2.3.1, 6.2.3.2, 6.2.3.3, 6.2.3.4, 6.2.3.5, 6.2.3.6, 6.2.3.7, 6.2.3.8, 6.2.3.10, 6.2.3.11, 6.2.3.9 et 64 autres

• cisco-sa-asaftd-ravpn-auth-8LyfCkeC(s’ouvre dans un nouvel onglet)
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-20269(s’ouvre dans un nouvel onglet)

Cisco (CVE record)

Cisco (CVE record) · 27 sept. 2026, 23:46 UTC · Analyseur patcharo-cve5/1.1.0

CISA Known Exploited Vulnerabilities

CISA Known Exploited Vulnerabilities · 27 sept. 2026, 23:42 UTC · Analyseur patcharo-kev/1.0.0

NVD

NVD · 27 sept. 2026, 23:44 UTC · Analyseur patcharo-nvd/1.0.0

FIRST EPSS

FIRST EPSS · 27 sept. 2026, 23:46 UTC · Analyseur patcharo-epss/1.0.0

Dernière vérification : 28 sept. 2026, 02:31 UTC