> CVE-2024-20495 [HIGH]

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PUBLISHED
2024-10-23 18:15
MODIFIED
2025-08-15 16:40
CVSS_SCORE V3
8.6
EPSS (Prob. Exploit)
0.52%
Top 55.7%
DATA SOURCES:
NVD 🔗 2025-10-18 CVE PROJECT 🔗 2026-01-19 FIRST EPSS 🔗 2026-11-08

> 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 cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition on an affected device. This vulnerability is due to improper validation of client key data after the TLS session is established. An attacker could exploit this vulnerability by sending a crafted key value to an affected system over the secure TLS session. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.

> AFFECTED_PRODUCTS

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: 9.12.3
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: 9.12.4.62
Cisco - Adaptive Security Appliance Software
Version: 9.12.4.65
Cisco - Adaptive Security Appliance Software
Version: 9.12.4.67
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: 9.16.4.27
Cisco - Adaptive Security Appliance Software
Version: 9.16.4.38
Cisco - Adaptive Security Appliance Software
Version: 9.16.4.39
Cisco - Adaptive Security Appliance Software
Version: 9.16.4.42
Cisco - Adaptive Security Appliance Software
Version: 9.16.4.48
Cisco - Adaptive Security Appliance Software
Version: 9.16.4.55
Cisco - Adaptive Security Appliance Software
Version: 9.16.4.57
Cisco - Adaptive Security Appliance Software
Version: 9.16.4.61
Cisco - Adaptive Security Appliance Software
Version: 9.16.4.62
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: 9.17.1.33
Cisco - Adaptive Security Appliance Software
Version: 9.17.1.39
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: 6.4.0.8
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: 6.4.0.17
Cisco - Firepower Threat Defense
Version: 6.4.0.18
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: 7.0.6
Cisco - Firepower Threat Defense
Version: 7.0.6.1
Cisco - Firepower Threat Defense
Version: 7.0.6.2
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

> CVSS V3 METRICS

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

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
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
None (N)
Aucune authentification requise
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
None (N)
Aucune modification de données possible
A (Impact Disponibilité)
Availability Impact
High (H)
Interruption totale du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
None
Aucune divulgation d'informations
Intégrité
None
Aucune modification de données possible
Disponibilité
High
Interruption totale du service possible

> HISTORIQUE DES MODIFICATIONS

Première apparition
23/10/2024 18:15
Source: NVD
📊 ENRICHISSEMENT 18/10/2025 14:55
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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