Cisco · Secure Firewall ASA Software and Cisco Secure FTD Software
CVE-2026-76418
Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Remote Access SSL VPN Tunnel Denial of Service Vulnerability
Что это
A vulnerability in the Remote Access SSL VPN service of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to logic errors when secondary authentication is configured on a tunnel group. An attacker could exploit this vulnerability by sending a crafted request when connecting to the SSL remote access VPN. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.
CISA: Cisco Secure Firewall ASA Software and Cisco Secure FTD Software contains an unchecked return value to NULL pointer dereference vulnerability that could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition.
Что делать
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Срок для федеральных ведомств США: 1 ноября 2026 г.
Другие эксплуатируемые уязвимости Cisco
| Добавлено | Уязвимость | Продукт | Серьёзность | Вероятность атаки |
|---|---|---|---|---|
| 10 нояб. 2026 г. | Improper Restriction of XML External Entity Reference | BroadWorks | Высокий 7,5 | 0,8% |
| 14 окт. 2026 г. | Relative Path Traversal | Secure Email Gateway | Критическая 9,8 | 6,2% |
| 30 сент. 2026 г. | Hex Encoding | Catalyst SD-WAN Manager | Критическая 9,8 | 39% |
| 16 сент. 2026 г. | Incorrect Use of Privileged APIs | Identity Services Engine | Критическая 10,0 | 76% |
| 14 сент. 2026 г. | SQL Injection | Secure Email Gateway | Критическая 9,8 | 40% |
| 9 сент. 2026 г. | Firewall Management Center Authentication Bypass Using an Alternate Path or Channel | Secure Firewall Management Center (FMC) and Security Cloud Control (SCC) Firewall Management | Критическая 10,0 | 89% |
| 11 авг. 2026 г. | Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Heap Inspection | Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) | Высокий 8,6 | 1,0% |
| 29 июл. 2026 г. | Secure Firewall Management Center Use of Hard-coded Password | Secure Firewall Management Center (FMC) | Средняя 5,3 | 35% |
Источники: Known Exploited Vulnerabilities (CISA, общественное достояние), CVE records (cve.org) и EPSS (FIRST). Вероятность атаки — оценка EPSS того, что кто-то попытается использовать уязвимость в ближайшие 30 дней.