> CVE-2023-20275 [MEDIUM]

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PUBLISHED
2023-12-12 18:15
MODIFIED
2024-11-21 07:41
CVSS_SCORE V3
4.1
EPSS (Prob. Exploit)
0.42%
Top 63.5%
DATA SOURCES:
NVD 🔗 2025-10-18 CVE PROJECT 🔗 2026-01-19 FIRST EPSS 🔗 2026-11-15

> DESCRIPTION

A vulnerability in the AnyConnect SSL VPN feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker to send packets with another VPN user's source IP address. This vulnerability is due to improper validation of the packet's inner source IP address after decryption. An attacker could exploit this vulnerability by sending crafted packets through the tunnel. A successful exploit could allow the attacker to send a packet impersonating another VPN user's IP address. It is not possible for the attacker to receive return packets.

> 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: 9.8.3
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: 9.15.1
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: 9.17.1
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: 9.18.3.46
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 - 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: 6.7.0
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: 7.1.0
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

> CVSS V3 METRICS

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

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/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
Required (R)
Nécessite une action utilisateur (clic lien, ouverture fichier, etc.)
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
12/12/2023 18:15
Source: NVD
📊 ENRICHISSEMENT 18/10/2025 14:45
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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