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CVE-2025-20333 Critique

Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Buffer Overflow Vulnerability.

Cisco · Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense

Exploitabilité (EPSS)
71.2 %
percentile mondial 99
Sévérité (CVSS)
9.9
CVSS v3.1
Ajoutée au KEV
25 sept. 2025
échéance CISA · 26 sept. 2025
Description

Cisco Secure Firewall Adaptive Security (ASA) Appliance and Secure Firewall Threat Defense (FTD) Software VPN Web Server contain a buffer overflow vulnerability that allows for remote code execution. This vulnerability could be chained with CVE-2025-20362.

Action requise (CISA)

The KEV due date refers to the deadline by which FCEB agencies are expected to review and begin implementing the guidance outlined in Emergency Directive (ED) 25-03 (URL listed below in Notes). Agencies must follow the mitigation steps provided by CISA (URL listed below in Notes) and vendor’s instructions (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available.

Familles de faiblesses
CWE-120 · Débordement de tampon (copie sans contrôle)
Signal de priorisation (d’inspiration SSVC)
Examiner rapidement
Exploitation
Active (catalogue KEV)
Automatisable
Non
Impact technique
Total

Une orientation, pas une décision : le 4ᵉ facteur SSVC (impact mission/société) dépend du contexte de votre organisation. Méthode ↗

Suivi CERT-FR (ANSSI)
[MàJ] Multiples vulnérabilités dans Cisco ASA et FTD (25 septembre 2025) CERTFR-2025-ALE-013
Autres vulnérabilités exploitées · Cisco
CVE-2021-1498 100% CVE-2020-3452 100% CVE-2021-1497 100% CVE-2018-0296 100% CVE-2019-1653 100% CVE-2023-20198 100%
NVD ↗ CVE.org ↗ CISA KEV ↗