> CVE-2024-20355 [MEDIUM]

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PUBLISHED
2024-05-22 17:16
MODIFIED
2025-07-30 19:04
CVSS_SCORE V3
5.0
EPSS (Prob. Exploit)
0.33%
Top 73.3%
DATA SOURCES:
NVD 🔗 2025-10-18 CVE PROJECT 🔗 2026-01-19 FIRST EPSS 🔗 2026-11-08

> DESCRIPTION

A vulnerability in the implementation of SAML 2.0 single sign-on (SSO) for remote access VPN services in Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker to successfully establish a VPN session on an affected device. This vulnerability is due to improper separation of authorization domains when using SAML authentication. An attacker could exploit this vulnerability by using valid credentials to successfully authenticate using their designated connection profile (tunnel group), intercepting the SAML SSO token that is sent back from the Cisco ASA device, and then submitting the same SAML SSO token to a different tunnel group for authentication. A successful exploit could allow the attacker to establish a remote access VPN session using a connection profile that they are not authorized to use and connect to secured networks behind the affected device that they are not authorized to access. For successful exploitation, the attacker must have valid remote access VPN user credentials.

> AFFECTED_PRODUCTS

Cisco - Adaptive Security Appliance Software
Version: 9.8.2.28
Cisco - Adaptive Security Appliance Software
Version: 9.8.2.33
Cisco - Adaptive Security Appliance Software
Version: 9.8.2.35
Cisco - Adaptive Security Appliance Software
Version: 9.8.2.38
Cisco - Adaptive Security Appliance Software
Version: 9.8.3
Cisco - Adaptive Security Appliance Software
Version: 9.8.3.8
Cisco - Adaptive Security Appliance Software
Version: 9.8.3.11
Cisco - Adaptive Security Appliance Software
Version: 9.8.3.14
Cisco - Adaptive Security Appliance Software
Version: 9.8.3.16
Cisco - Adaptive Security Appliance Software
Version: 9.8.3.18
Cisco - Adaptive Security Appliance Software
Version: 9.8.3.21
Cisco - Adaptive Security Appliance Software
Version: 9.8.3.26
Cisco - Adaptive Security Appliance Software
Version: 9.8.3.29
Cisco - Adaptive Security Appliance Software
Version: 9.8.4
Cisco - Adaptive Security Appliance Software
Version: 9.8.4.3
Cisco - Adaptive Security Appliance Software
Version: 9.8.4.7
Cisco - Adaptive Security Appliance Software
Version: 9.8.4.8
Cisco - Adaptive Security Appliance Software
Version: 9.8.4.10
Cisco - Adaptive Security Appliance Software
Version: 9.8.4.12
Cisco - Adaptive Security Appliance Software
Version: 9.8.4.15
Cisco - Adaptive Security Appliance Software
Version: 9.8.4.17
Cisco - Adaptive Security Appliance Software
Version: 9.8.4.20
Cisco - Adaptive Security Appliance Software
Version: 9.8.4.22
Cisco - Adaptive Security Appliance Software
Version: 9.8.4.25
Cisco - Adaptive Security Appliance Software
Version: 9.8.4.26
Cisco - Adaptive Security Appliance Software
Version: 9.8.4.29
Cisco - Adaptive Security Appliance Software
Version: 9.8.4.32
Cisco - Adaptive Security Appliance Software
Version: 9.8.4.33
Cisco - Adaptive Security Appliance Software
Version: 9.8.4.34
Cisco - Adaptive Security Appliance Software
Version: 9.8.4.35
Cisco - Adaptive Security Appliance Software
Version: 9.8.4.39
Cisco - Adaptive Security Appliance Software
Version: 9.8.4.40
Cisco - Adaptive Security Appliance Software
Version: 9.8.4.41
Cisco - Adaptive Security Appliance Software
Version: 9.8.4.43
Cisco - Adaptive Security Appliance Software
Version: 9.8.4.44
Cisco - Adaptive Security Appliance Software
Version: 9.8.4.45
Cisco - Adaptive Security Appliance Software
Version: 9.8.4.46
Cisco - Adaptive Security Appliance Software
Version: 9.8.4.48
Cisco - Adaptive Security Appliance Software
Version: 9.12.1
Cisco - Adaptive Security Appliance Software
Version: 9.12.1.2
Cisco - Adaptive Security Appliance Software
Version: 9.12.1.3
Cisco - Adaptive Security Appliance Software
Version: 9.12.2
Cisco - Adaptive Security Appliance Software
Version: 9.12.2.1
Cisco - Adaptive Security Appliance Software
Version: 9.12.2.4
Cisco - Adaptive Security Appliance Software
Version: 9.12.2.5
Cisco - Adaptive Security Appliance Software
Version: 9.12.2.9
Cisco - Adaptive Security Appliance Software
Version: 9.12.3
Cisco - Adaptive Security Appliance Software
Version: 9.12.3.2
Cisco - Adaptive Security Appliance Software
Version: 9.12.3.7
Cisco - Adaptive Security Appliance Software
Version: 9.12.3.9
Cisco - Adaptive Security Appliance Software
Version: 9.12.3.12
Cisco - Adaptive Security Appliance Software
Version: 9.12.4
Cisco - Adaptive Security Appliance Software
Version: 9.12.4.2
Cisco - Adaptive Security Appliance Software
Version: 9.12.4.4
Cisco - Adaptive Security Appliance Software
Version: 9.12.4.7
Cisco - Adaptive Security Appliance Software
Version: 9.12.4.8
Cisco - Adaptive Security Appliance Software
Version: 9.12.4.10
Cisco - Adaptive Security Appliance Software
Version: 9.12.4.13
Cisco - Adaptive Security Appliance Software
Version: 9.12.4.18
Cisco - Adaptive Security Appliance Software
Version: 9.12.4.24
Cisco - Adaptive Security Appliance Software
Version: 9.12.4.26
Cisco - Adaptive Security Appliance Software
Version: 9.12.4.29
Cisco - Adaptive Security Appliance Software
Version: 9.12.4.30
Cisco - Adaptive Security Appliance Software
Version: 9.12.4.35
Cisco - Adaptive Security Appliance Software
Version: 9.12.4.37
Cisco - Adaptive Security Appliance Software
Version: 9.12.4.38
Cisco - Adaptive Security Appliance Software
Version: 9.12.4.39
Cisco - Adaptive Security Appliance Software
Version: 9.12.4.40
Cisco - Adaptive Security Appliance Software
Version: 9.12.4.41
Cisco - Adaptive Security Appliance Software
Version: 9.12.4.47
Cisco - Adaptive Security Appliance Software
Version: 9.12.4.48
Cisco - Adaptive Security Appliance Software
Version: 9.12.4.50
Cisco - Adaptive Security Appliance Software
Version: 9.12.4.52
Cisco - Adaptive Security Appliance Software
Version: 9.12.4.54
Cisco - Adaptive Security Appliance Software
Version: 9.12.4.55
Cisco - Adaptive Security Appliance Software
Version: 9.12.4.56
Cisco - Adaptive Security Appliance Software
Version: 9.12.4.58
Cisco - Adaptive Security Appliance Software
Version: 9.14.1
Cisco - Adaptive Security Appliance Software
Version: 9.14.1.6
Cisco - Adaptive Security Appliance Software
Version: 9.14.1.10
Cisco - Adaptive Security Appliance Software
Version: 9.14.1.15
Cisco - Adaptive Security Appliance Software
Version: 9.14.1.19
Cisco - Adaptive Security Appliance Software
Version: 9.14.1.30
Cisco - Adaptive Security Appliance Software
Version: 9.14.2
Cisco - Adaptive Security Appliance Software
Version: 9.14.2.4
Cisco - Adaptive Security Appliance Software
Version: 9.14.2.8
Cisco - Adaptive Security Appliance Software
Version: 9.14.2.13
Cisco - Adaptive Security Appliance Software
Version: 9.14.2.15
Cisco - Adaptive Security Appliance Software
Version: 9.14.3
Cisco - Adaptive Security Appliance Software
Version: 9.14.3.1
Cisco - Adaptive Security Appliance Software
Version: 9.14.3.9
Cisco - Adaptive Security Appliance Software
Version: 9.14.3.11
Cisco - Adaptive Security Appliance Software
Version: 9.14.3.13
Cisco - Adaptive Security Appliance Software
Version: 9.14.3.15
Cisco - Adaptive Security Appliance Software
Version: 9.14.3.18
Cisco - Adaptive Security Appliance Software
Version: 9.14.4
Cisco - Adaptive Security Appliance Software
Version: 9.14.4.6
Cisco - Adaptive Security Appliance Software
Version: 9.14.4.7
Cisco - Adaptive Security Appliance Software
Version: 9.14.4.12
Cisco - Adaptive Security Appliance Software
Version: 9.14.4.13
Cisco - Adaptive Security Appliance Software
Version: 9.14.4.14
Cisco - Adaptive Security Appliance Software
Version: 9.14.4.15
Cisco - Adaptive Security Appliance Software
Version: 9.14.4.17
Cisco - Adaptive Security Appliance Software
Version: 9.14.4.22
Cisco - Adaptive Security Appliance Software
Version: 9.14.4.23
Cisco - Adaptive Security Appliance Software
Version: 9.14.4.24
Cisco - Adaptive Security Appliance Software
Version: 9.15.1
Cisco - Adaptive Security Appliance Software
Version: 9.15.1.1
Cisco - Adaptive Security Appliance Software
Version: 9.15.1.7
Cisco - Adaptive Security Appliance Software
Version: 9.15.1.10
Cisco - Adaptive Security Appliance Software
Version: 9.15.1.15
Cisco - Adaptive Security Appliance Software
Version: 9.15.1.16
Cisco - Adaptive Security Appliance Software
Version: 9.15.1.17
Cisco - Adaptive Security Appliance Software
Version: 9.15.1.21
Cisco - Adaptive Security Appliance Software
Version: 9.16.1
Cisco - Adaptive Security Appliance Software
Version: 9.16.1.28
Cisco - Adaptive Security Appliance Software
Version: 9.16.2
Cisco - Adaptive Security Appliance Software
Version: 9.16.2.3
Cisco - Adaptive Security Appliance Software
Version: 9.16.2.7
Cisco - Adaptive Security Appliance Software
Version: 9.16.2.11
Cisco - Adaptive Security Appliance Software
Version: 9.16.2.13
Cisco - Adaptive Security Appliance Software
Version: 9.16.2.14
Cisco - Adaptive Security Appliance Software
Version: 9.16.3
Cisco - Adaptive Security Appliance Software
Version: 9.16.3.3
Cisco - Adaptive Security Appliance Software
Version: 9.16.3.14
Cisco - Adaptive Security Appliance Software
Version: 9.16.3.15
Cisco - Adaptive Security Appliance Software
Version: 9.16.3.19
Cisco - Adaptive Security Appliance Software
Version: 9.16.3.23
Cisco - Adaptive Security Appliance Software
Version: 9.16.4
Cisco - Adaptive Security Appliance Software
Version: 9.16.4.9
Cisco - Adaptive Security Appliance Software
Version: 9.16.4.14
Cisco - Adaptive Security Appliance Software
Version: 9.16.4.18
Cisco - Adaptive Security Appliance Software
Version: 9.16.4.19
Cisco - Adaptive Security Appliance Software
Version: 9.17.1
Cisco - Adaptive Security Appliance Software
Version: 9.17.1.7
Cisco - Adaptive Security Appliance Software
Version: 9.17.1.9
Cisco - Adaptive Security Appliance Software
Version: 9.17.1.10
Cisco - Adaptive Security Appliance Software
Version: 9.17.1.11
Cisco - Adaptive Security Appliance Software
Version: 9.17.1.13
Cisco - Adaptive Security Appliance Software
Version: 9.17.1.15
Cisco - Adaptive Security Appliance Software
Version: 9.17.1.20
Cisco - Adaptive Security Appliance Software
Version: 9.17.1.30
Cisco - Adaptive Security Appliance Software
Version: 9.18.1
Cisco - Adaptive Security Appliance Software
Version: 9.18.1.3
Cisco - Adaptive Security Appliance Software
Version: 9.18.2
Cisco - Adaptive Security Appliance Software
Version: 9.18.2.5
Cisco - Adaptive Security Appliance Software
Version: 9.18.2.7
Cisco - Adaptive Security Appliance Software
Version: 9.18.2.8
Cisco - Adaptive Security Appliance Software
Version: 9.18.3
Cisco - Adaptive Security Appliance Software
Version: 9.18.3.39
Cisco - Adaptive Security Appliance Software
Version: 9.19.1
Cisco - Adaptive Security Appliance Software
Version: 9.19.1.5
Cisco - Adaptive Security Appliance Software
Version: 9.19.1.9
Cisco - Firepower Threat Defense
Version: 6.2.3
Cisco - Firepower Threat Defense
Version: 6.2.3.1
Cisco - Firepower Threat Defense
Version: 6.2.3.2
Cisco - Firepower Threat Defense
Version: 6.2.3.3
Cisco - Firepower Threat Defense
Version: 6.2.3.4
Cisco - Firepower Threat Defense
Version: 6.2.3.5
Cisco - Firepower Threat Defense
Version: 6.2.3.6
Cisco - Firepower Threat Defense
Version: 6.2.3.7
Cisco - Firepower Threat Defense
Version: 6.2.3.8
Cisco - Firepower Threat Defense
Version: 6.2.3.9
Cisco - Firepower Threat Defense
Version: 6.2.3.10
Cisco - Firepower Threat Defense
Version: 6.2.3.11
Cisco - Firepower Threat Defense
Version: 6.2.3.12
Cisco - Firepower Threat Defense
Version: 6.2.3.13
Cisco - Firepower Threat Defense
Version: 6.2.3.14
Cisco - Firepower Threat Defense
Version: 6.2.3.15
Cisco - Firepower Threat Defense
Version: 6.2.3.16
Cisco - Firepower Threat Defense
Version: 6.2.3.17
Cisco - Firepower Threat Defense
Version: 6.2.3.18
Cisco - Firepower Threat Defense
Version: 6.4.0
Cisco - Firepower Threat Defense
Version: 6.4.0.1
Cisco - Firepower Threat Defense
Version: 6.4.0.2
Cisco - Firepower Threat Defense
Version: 6.4.0.3
Cisco - Firepower Threat Defense
Version: 6.4.0.4
Cisco - Firepower Threat Defense
Version: 6.4.0.5
Cisco - Firepower Threat Defense
Version: 6.4.0.6
Cisco - Firepower Threat Defense
Version: 6.4.0.7
Cisco - Firepower Threat Defense
Version: 6.4.0.8
Cisco - Firepower Threat Defense
Version: 6.4.0.9
Cisco - Firepower Threat Defense
Version: 6.4.0.10
Cisco - Firepower Threat Defense
Version: 6.4.0.11
Cisco - Firepower Threat Defense
Version: 6.4.0.12
Cisco - Firepower Threat Defense
Version: 6.4.0.13
Cisco - Firepower Threat Defense
Version: 6.4.0.14
Cisco - Firepower Threat Defense
Version: 6.4.0.15
Cisco - Firepower Threat Defense
Version: 6.4.0.16
Cisco - Firepower Threat Defense
Version: 6.6.0
Cisco - Firepower Threat Defense
Version: 6.6.0.1
Cisco - Firepower Threat Defense
Version: 6.6.1
Cisco - Firepower Threat Defense
Version: 6.6.3
Cisco - Firepower Threat Defense
Version: 6.6.4
Cisco - Firepower Threat Defense
Version: 6.6.5
Cisco - Firepower Threat Defense
Version: 6.6.5.1
Cisco - Firepower Threat Defense
Version: 6.6.5.2
Cisco - Firepower Threat Defense
Version: 6.6.7
Cisco - Firepower Threat Defense
Version: 6.6.7.1
Cisco - Firepower Threat Defense
Version: 6.6.7.2
Cisco - Firepower Threat Defense
Version: 6.7.0
Cisco - Firepower Threat Defense
Version: 6.7.0.1
Cisco - Firepower Threat Defense
Version: 6.7.0.2
Cisco - Firepower Threat Defense
Version: 6.7.0.3
Cisco - Firepower Threat Defense
Version: 7.0.0
Cisco - Firepower Threat Defense
Version: 7.0.0.1
Cisco - Firepower Threat Defense
Version: 7.0.1
Cisco - Firepower Threat Defense
Version: 7.0.1.1
Cisco - Firepower Threat Defense
Version: 7.0.2
Cisco - Firepower Threat Defense
Version: 7.0.2.1
Cisco - Firepower Threat Defense
Version: 7.0.3
Cisco - Firepower Threat Defense
Version: 7.0.4
Cisco - Firepower Threat Defense
Version: 7.0.5
Cisco - Firepower Threat Defense
Version: 7.1.0
Cisco - Firepower Threat Defense
Version: 7.1.0.1
Cisco - Firepower Threat Defense
Version: 7.1.0.2
Cisco - Firepower Threat Defense
Version: 7.1.0.3
Cisco - Firepower Threat Defense
Version: 7.2.0
Cisco - Firepower Threat Defense
Version: 7.2.0.1
Cisco - Firepower Threat Defense
Version: 7.2.1
Cisco - Firepower Threat Defense
Version: 7.2.2
Cisco - Firepower Threat Defense
Version: 7.2.3
Cisco - Firepower Threat Defense
Version: 7.2.4
Cisco - Firepower Threat Defense
Version: 7.3.0
Cisco - Firepower Threat Defense
Version: 7.3.1
Cisco - Firepower Threat Defense
Version: 7.3.1.1
Cisco - Firepower Threat Defense
Version: 7.3.1.2

> CVSS V3 METRICS

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

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
Low (L)
Authentifié avec compte utilisateur basique
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Changed (C)
Impact s'étend au-delà du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
None (N)
Aucune divulgation d'informations
I (Impact Intégrité)
Integrity Impact
Low (L)
Modification limitée des données possible
A (Impact Disponibilité)
Availability Impact
None (N)
Aucune interruption de service

> RÉSUMÉ DES IMPACTS

Confidentialité
None
Aucune divulgation d'informations
Intégrité
Low
Modification limitée des données possible
Disponibilité
None
Aucune interruption de service

> HISTORIQUE DES MODIFICATIONS

Première apparition
22/05/2024 17:16
Source: NVD
📊 ENRICHISSEMENT 18/10/2025 14:51
CVEPROJECT
Champ modifié: CVE Project
Ancienne valeur:
Non
Nouvelle valeur:
Oui
Total des modifications: 1 Dernière mise à jour: 1 year ago
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