> CVE-2022-20685 [HIGH]

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PUBLISHED
2024-11-15 16:15
MODIFIED
2025-06-24 14:47
CVSS_SCORE V3
7.5
EPSS (Prob. Exploit)
1.46%
Top 26.7%
DATA SOURCES:
NVD 🔗 2025-10-18 CVE PROJECT 🔗 2026-01-19 FIRST EPSS 🔗 2026-10-25

> DESCRIPTION

A vulnerability in the Modbus preprocessor of the Snort detection engine could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to an integer overflow while processing Modbus traffic. An attacker could exploit this vulnerability by sending crafted Modbus traffic through an affected device. A successful exploit could allow the attacker to cause the Snort process to hang, causing traffic inspection to stop.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

> AFFECTED_PRODUCTS

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: 6.6.0
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: 6.7.0
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 - Cyber Vision
Version: 3.0.0
Cisco - Cyber Vision
Version: 3.0.1
Cisco - Cyber Vision
Version: 3.0.2
Cisco - Cyber Vision
Version: 3.0.3
Cisco - Cyber Vision
Version: 3.0.4
Cisco - Cyber Vision
Version: 3.0.5
Cisco - Cyber Vision
Version: 3.0.6
Cisco - Cyber Vision
Version: 3.1.0
Cisco - Cyber Vision
Version: 3.1.1
Cisco - Cyber Vision
Version: 3.1.2
Cisco - Cyber Vision
Version: 3.2.0
Cisco - Cyber Vision
Version: 3.2.1
Cisco - Cyber Vision
Version: 3.2.2
Cisco - Cyber Vision
Version: 3.2.3
Cisco - Cyber Vision
Version: 3.2.4
Cisco - Cyber Vision
Version: 4.0.0
Cisco - Cyber Vision
Version: 4.0.1
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: 3.17.0s
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: 3.17.1s
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: 16.6.1
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: 16.6.5
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: 16.6.6
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: 16.6.7a
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: 16.6.9
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: 16.6.10
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: 16.12.1a
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: 16.12.2
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: 16.12.3
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: 16.12.4
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: 16.12.5
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: 16.12.6
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: 17.1.1
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: 17.2.1r
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: 17.3.1a
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: 17.3.2
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: 17.3.3
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: 17.3.4
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: 17.3.4a
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: 17.4.1a
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: 17.4.1b
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: 17.4.2
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: 17.5.1
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: 17.5.1a
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: 17.6.1a
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: 17.7.1a
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: denali-16.3.3
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: denali-16.3.4
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: denali-16.3.5
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: denali-16.3.7
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: denali-16.3.9
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: everest-16.6.2
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: everest-16.6.3
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: everest-16.6.4
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: fuji-16.9.2
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: fuji-16.9.3
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: fuji-16.9.4
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: fuji-16.9.5
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: fuji-16.9.6
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: fuji-16.9.7
Cisco - Unified Threat Defense Snort Intrusion Prevention System Engine
Version: fuji-16.9.8

> CVSS V3 METRICS

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

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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
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
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
15/11/2024 16:15
Source: NVD
📊 ENRICHISSEMENT 18/10/2025 14:38
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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