> CVE-2026-20331 [CRITICAL]

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PUBLISHED
2026-09-16 17:17
MODIFIED
2026-09-16 17:17
CVSS_SCORE V3
9.6
EPSS (Prob. Exploit)
0.23%
Top 87.0%
DATA SOURCES:
NVD đź”— 2026-09-16 CWE MITRE đź”— 2026-10-01 FIRST EPSS đź”— 2026-10-25

> DESCRIPTION

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Adaptive Security Appliance Software, Cisco Secure Firewall Threat Defense Software and Cisco Secure Firewall Management Center Software engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities.   The vulnerabilities tracked by CVE-2026-20331 are related to the failure of protection mechanisms issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-693.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L
EXPLOITABILITY
2.8
IMPACT
6.0

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Adjacent (A)
Exploit nécessite un accès au segment réseau local
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
High (H)
Divulgation totale d'informations
I (Impact Intégrité)
Integrity Impact
High (H)
Modification totale des données possible
A (Impact Disponibilité)
Availability Impact
Low (L)
Interruption partielle du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
High
Divulgation totale d'informations
Intégrité
High
Modification totale des données possible
Disponibilité
Low
Interruption partielle du service possible

> WEAKNESSES

CWE-693

> CWE DETAILED DESCRIPTIONS

CWE-693: Protection Mechanism Failure - The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.

> HISTORIQUE DES MODIFICATIONS

Première apparition
16/09/2026 17:17
Source: NVD
📊 ENRICHISSEMENT 01/10/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-693: Protection Mechanism Failure - The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.
Total des modifications: 1 Dernière mise à jour: 3 weeks ago

> REFERENCES

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/ci...
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