Cisco Secure Firewall Adaptive Security (ASA) Appliance and Secure Firewall Threat Defense (FTD) Missing Authorization Vulnerability
Update: On November 5, 2025, Cisco became aware of a new attack variant against devices running Cisco Secure ASA Software or Cisco Secure FTD Software releases that are affected by CVE-2025-20333 and CVE-2025-20362. This attack can cause…
Schweregrad = CVSS. Wahrscheinlichkeit = EPSS (FIRST). Ausnutzung = öffentliche Signale: KEV, EUVD, Ransomware, EPSS über 10 %, ohne Konto.
Ausnutzungswahrscheinlichkeit EPSS · FIRST
Ausnutzungssignale 4 / 5
- KEV-Katalog (CISA)25.09.2025
- In der EUVD ausgenutzt (ENISA)25.09.2025
- Von Ransomware genutztnein
- EPSS über 10 %87,1 %
- Ohne Konto, über das Netzja
Was tun
Beheben
Den Patch des Herstellers einspielen, sobald er verfügbar ist.
Vorgabe der 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.
Bis dahin
Den Dienst vom Internet nehmen oder den Zugriff einschränken, Protokolle überwachen und nach Kompromittierungsspuren suchen.
Hersteller (CRA)
Ausgenutzte Schwachstelle in Ihrem Produkt: Frühwarnung an die ENISA binnen 24 h, dann Meldung binnen 72 h (Artikel 14 des Cyber Resilience Act). Der CRA erklärt
Beschreibung ENISA EUVD
Update: On November 5, 2025, Cisco became aware of a new attack variant against devices running Cisco Secure ASA Software or Cisco Secure FTD Software releases that are affected by CVE-2025-20333 and CVE-2025-20362. This attack can cause unpatched devices to unexpectedly reload, leading to denial of service (DoS) conditions. Cisco strongly recommends that all customers upgrade to the fixed software releases that are listed in the Fixed Software ["#fs"] section of this advisory. A vulnerability in the VPN web server of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to access restricted URL endpoints that are related to remote access VPN that should otherwise be inaccessible without authentication. This vulnerability is due to improper validation of user-supplied input in HTTP(S) requests. An attacker could exploit this vulnerability by sending crafted HTTP requests to a targeted web server on a device. A successful exploit could allow the attacker to access a restricted URL without authentication.
Text der Quelle, auf Englisch.
Betroffene Produkte
- 9.8.3.8
- 9.8.4.29
- 6.4.0.14
- 9.8.3.11
- 6.2.3.17
- 9.17.1.15
- 9.12.4.30
- 9.18.4.57
- 7.0.8
- 9.12.4.4
- 9.18.4.8
- 9.18.4.40
Open-Source-Pakete OSV
Betroffene Bibliotheken laut OSV, mit behobenen Versionen.
Zeitverlauf
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Veröffentlichung
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Ausnutzung gemeldet (ENISA)
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Aufnahme in den KEV-Katalog
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CISA-Frist zur Behebung
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EPSS-Höchstwert: 87,1 %
Referenzen
Weitere ausgenutzte Schwachstellen desselben Herstellers
- CVE-2026-76418Cisco Secure Firewall ASA Software and Cisco Secure FTD Software Unchecked Return Value to NULL Pointer Dereference Vulnerability5,3 · Stark steigend
- CVE-2026-76519Cisco Secure Email Gateway Relative Path Traversal Vulnerability5,8 · Stark steigend
- CVE-2026-76504Cisco Catalyst SD-WAN Manager Hex Encoding Vulnerability7,5 · Aktiv ausgenutzt
- CVE-2026-76460Cisco Identity Services Engine Incorrect Use of Privileged APIs Vulnerability8,7 · Aktiv ausgenutzt
- CVE-2026-76461Cisco Secure Email Gateway SQL Injection Vulnerability7,2 · Aktiv ausgenutzt
- CVE-2026-20079Cisco Firewall Management Center Authentication Bypass Using an Alternate Path or Channel Vulnerability9,1 · Aktiv ausgenutzt