> CVE-2024-20493 [MEDIUM]

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PUBLISHED
2024-10-23 18:15
MODIFIED
2024-11-01 12:54
CVSS_SCORE V3
5.3
EPSS (Prob. Exploit)
0.55%
Top 53.5%
DATA SOURCES:
NVD 🔗 2025-10-18 CVE PROJECT 🔗 2026-01-19 FIRST EPSS 🔗 2026-11-08

> DESCRIPTION

A vulnerability in the login authentication functionality of the Remote Access SSL VPN feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to deny further VPN user authentications for several minutes, resulting in a temporary denial of service (DoS) condition. This vulnerability is due to ineffective handling of memory resources during the authentication process. An attacker could exploit this vulnerability by sending crafted packets, which could cause resource exhaustion of the authentication process. A successful exploit could allow the attacker to deny authentication for Remote Access SSL VPN users for several minutes, resulting in a temporary DoS condition.

> AFFECTED_PRODUCTS

Cisco - Adaptive Security Appliance Software
Version: 9.8.1
Cisco - Adaptive Security Appliance Software
Version: 9.8.1.5
Cisco - Adaptive Security Appliance Software
Version: 9.8.1.7
Cisco - Adaptive Security Appliance Software
Version: 9.8.2
Cisco - Adaptive Security Appliance Software
Version: 9.8.2.8
Cisco - Adaptive Security Appliance Software
Version: 9.8.2.14
Cisco - Adaptive Security Appliance Software
Version: 9.8.2.15
Cisco - Adaptive Security Appliance Software
Version: 9.8.2.17
Cisco - Adaptive Security Appliance Software
Version: 9.8.2.20
Cisco - Adaptive Security Appliance Software
Version: 9.8.2.24
Cisco - Adaptive Security Appliance Software
Version: 9.8.2.26
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: 9.8.2.45
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: 9.12.4.62
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 - 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: 9.18.3.46
Cisco - Adaptive Security Appliance Software
Version: 9.18.3.53
Cisco - Adaptive Security Appliance Software
Version: 9.18.3.55
Cisco - Adaptive Security Appliance Software
Version: 9.18.3.56
Cisco - Adaptive Security Appliance Software
Version: 9.18.4
Cisco - Adaptive Security Appliance Software
Version: 9.18.4.5
Cisco - Adaptive Security Appliance Software
Version: 9.18.4.8
Cisco - Adaptive Security Appliance Software
Version: 9.18.4.22
Cisco - Adaptive Security Appliance Software
Version: 9.18.4.24
Cisco - Adaptive Security Appliance Software
Version: 9.18.4.29
Cisco - Adaptive Security Appliance Software
Version: 9.18.4.34
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 - Adaptive Security Appliance Software
Version: 9.19.1.12
Cisco - Adaptive Security Appliance Software
Version: 9.19.1.18
Cisco - Adaptive Security Appliance Software
Version: 9.19.1.22
Cisco - Adaptive Security Appliance Software
Version: 9.19.1.24
Cisco - Adaptive Security Appliance Software
Version: 9.19.1.27
Cisco - Adaptive Security Appliance Software
Version: 9.19.1.28
Cisco - Adaptive Security Appliance Software
Version: 9.19.1.31
Cisco - Adaptive Security Appliance Software
Version: 9.20.1
Cisco - Adaptive Security Appliance Software
Version: 9.20.1.5
Cisco - Adaptive Security Appliance Software
Version: 9.20.2
Cisco - Adaptive Security Appliance Software
Version: 9.20.2.10
Cisco - Adaptive Security Appliance Software
Version: 9.20.2.21
Cisco - Adaptive Security Appliance Software
Version: 9.20.2.22
Cisco - Firepower Threat Defense Software
Version: 6.2.3
Cisco - Firepower Threat Defense Software
Version: 6.2.3.1
Cisco - Firepower Threat Defense Software
Version: 6.2.3.2
Cisco - Firepower Threat Defense Software
Version: 6.2.3.3
Cisco - Firepower Threat Defense Software
Version: 6.2.3.4
Cisco - Firepower Threat Defense Software
Version: 6.2.3.5
Cisco - Firepower Threat Defense Software
Version: 6.2.3.6
Cisco - Firepower Threat Defense Software
Version: 6.2.3.7
Cisco - Firepower Threat Defense Software
Version: 6.2.3.8
Cisco - Firepower Threat Defense Software
Version: 6.2.3.9
Cisco - Firepower Threat Defense Software
Version: 6.2.3.10
Cisco - Firepower Threat Defense Software
Version: 6.2.3.11
Cisco - Firepower Threat Defense Software
Version: 6.2.3.12
Cisco - Firepower Threat Defense Software
Version: 6.2.3.13
Cisco - Firepower Threat Defense Software
Version: 6.2.3.14
Cisco - Firepower Threat Defense Software
Version: 6.2.3.15
Cisco - Firepower Threat Defense Software
Version: 6.2.3.16
Cisco - Firepower Threat Defense Software
Version: 6.2.3.17
Cisco - Firepower Threat Defense Software
Version: 6.2.3.18
Cisco - Firepower Threat Defense Software
Version: 6.4.0
Cisco - Firepower Threat Defense Software
Version: 6.4.0.1
Cisco - Firepower Threat Defense Software
Version: 6.4.0.2
Cisco - Firepower Threat Defense Software
Version: 6.4.0.3
Cisco - Firepower Threat Defense Software
Version: 6.4.0.4
Cisco - Firepower Threat Defense Software
Version: 6.4.0.5
Cisco - Firepower Threat Defense Software
Version: 6.4.0.6
Cisco - Firepower Threat Defense Software
Version: 6.4.0.7
Cisco - Firepower Threat Defense Software
Version: 6.4.0.8
Cisco - Firepower Threat Defense Software
Version: 6.4.0.9
Cisco - Firepower Threat Defense Software
Version: 6.4.0.10
Cisco - Firepower Threat Defense Software
Version: 6.4.0.11
Cisco - Firepower Threat Defense Software
Version: 6.4.0.12
Cisco - Firepower Threat Defense Software
Version: 6.4.0.13
Cisco - Firepower Threat Defense Software
Version: 6.4.0.14
Cisco - Firepower Threat Defense Software
Version: 6.4.0.15
Cisco - Firepower Threat Defense Software
Version: 6.4.0.16
Cisco - Firepower Threat Defense Software
Version: 6.4.0.17
Cisco - Firepower Threat Defense Software
Version: 6.4.0.18
Cisco - Firepower Threat Defense Software
Version: 6.6.0
Cisco - Firepower Threat Defense Software
Version: 6.6.0.1
Cisco - Firepower Threat Defense Software
Version: 6.6.1
Cisco - Firepower Threat Defense Software
Version: 6.6.3
Cisco - Firepower Threat Defense Software
Version: 6.6.4
Cisco - Firepower Threat Defense Software
Version: 6.6.5
Cisco - Firepower Threat Defense Software
Version: 6.6.5.1
Cisco - Firepower Threat Defense Software
Version: 6.6.5.2
Cisco - Firepower Threat Defense Software
Version: 6.6.7
Cisco - Firepower Threat Defense Software
Version: 6.6.7.1
Cisco - Firepower Threat Defense Software
Version: 6.6.7.2
Cisco - Firepower Threat Defense Software
Version: 6.7.0
Cisco - Firepower Threat Defense Software
Version: 6.7.0.1
Cisco - Firepower Threat Defense Software
Version: 6.7.0.2
Cisco - Firepower Threat Defense Software
Version: 6.7.0.3
Cisco - Firepower Threat Defense Software
Version: 7.0.0
Cisco - Firepower Threat Defense Software
Version: 7.0.0.1
Cisco - Firepower Threat Defense Software
Version: 7.0.1
Cisco - Firepower Threat Defense Software
Version: 7.0.1.1
Cisco - Firepower Threat Defense Software
Version: 7.0.2
Cisco - Firepower Threat Defense Software
Version: 7.0.2.1
Cisco - Firepower Threat Defense Software
Version: 7.0.3
Cisco - Firepower Threat Defense Software
Version: 7.0.4
Cisco - Firepower Threat Defense Software
Version: 7.0.5
Cisco - Firepower Threat Defense Software
Version: 7.0.6
Cisco - Firepower Threat Defense Software
Version: 7.0.6.1
Cisco - Firepower Threat Defense Software
Version: 7.0.6.2
Cisco - Firepower Threat Defense Software
Version: 7.1.0
Cisco - Firepower Threat Defense Software
Version: 7.1.0.1
Cisco - Firepower Threat Defense Software
Version: 7.1.0.2
Cisco - Firepower Threat Defense Software
Version: 7.1.0.3
Cisco - Firepower Threat Defense Software
Version: 7.2.0
Cisco - Firepower Threat Defense Software
Version: 7.2.0.1
Cisco - Firepower Threat Defense Software
Version: 7.2.1
Cisco - Firepower Threat Defense Software
Version: 7.2.2
Cisco - Firepower Threat Defense Software
Version: 7.2.3
Cisco - Firepower Threat Defense Software
Version: 7.2.4
Cisco - Firepower Threat Defense Software
Version: 7.2.4.1
Cisco - Firepower Threat Defense Software
Version: 7.2.5
Cisco - Firepower Threat Defense Software
Version: 7.2.5.1
Cisco - Firepower Threat Defense Software
Version: 7.2.5.2
Cisco - Firepower Threat Defense Software
Version: 7.2.6
Cisco - Firepower Threat Defense Software
Version: 7.2.7
Cisco - Firepower Threat Defense Software
Version: 7.2.8
Cisco - Firepower Threat Defense Software
Version: 7.2.8.1
Cisco - Firepower Threat Defense Software
Version: 7.3.0
Cisco - Firepower Threat Defense Software
Version: 7.3.1
Cisco - Firepower Threat Defense Software
Version: 7.3.1.1
Cisco - Firepower Threat Defense Software
Version: 7.3.1.2
Cisco - Firepower Threat Defense Software
Version: 7.4.0
Cisco - Firepower Threat Defense Software
Version: 7.4.1
Cisco - Firepower Threat Defense Software
Version: 7.4.1.1
Cisco - Firepower Threat Defense Software
Version: 7.4.2

> CVSS V3 METRICS

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

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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
Unchanged (U)
Impact reste dans le périmètre 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
Low (L)
Interruption partielle du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
None
Aucune divulgation d'informations
Intégrité
None
Aucune modification de données possible
Disponibilité
Low
Interruption partielle 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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