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CVE-2026-76418

CVE-2026-76418 · Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Remote Access SSL VPN Tunnel Denial of Service Vulnerability

This page contains facts from public vulnerability sources. Check the original advisory before updating.

This page shows selected source facts. See the linked advisories for the complete description and affected versions.

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.

CVSS 8.6 · High · EPSS 0.8% · In KEV · Public exploit

Published
Updated

Affected products and versions

  • cisco secure firewall adaptive security appliance (asa) software

    Versions
    • 9.16.1: Affected
    • 9.16.1.28: Affected
    • 9.16.2: Affected
    • 9.16.2.3: Affected
    • 9.16.2.7: Affected
    • 9.16.2.11: Affected
    • 9.16.2.13: Affected
    • 9.16.2.14: Affected
    • 9.16.3.3: Affected
    • 9.16.3: Affected
    • 9.16.3.14: Affected
    • 9.18.1: Affected
    • 9.16.3.15: Affected
    • 9.18.1.3: Affected
    • 9.18.2: Affected
    • 9.16.3.19: Affected
    • 9.16.3.23: Affected
    • 9.18.2.5: Affected
    • 9.16.4: Affected
    • 9.18.2.7: Affected
    • 9.19.1: Affected
    • 9.16.4.9: Affected
    • 9.18.2.8: Affected
    • 9.16.4.14: Affected
    • 9.18.3: Affected
    • 9.19.1.5: Affected
    • 9.16.4.18: Affected
    • 9.19.1.9: Affected
    • 9.18.3.39: Affected
    • 9.16.4.19: Affected
    • 9.19.1.12: Affected
    • 9.18.3.46: Affected
    • 9.16.4.27: Affected
    • 9.19.1.18: Affected
    • 9.18.3.53: Affected
    • 9.18.3.55: Affected
    • 9.16.4.38: Affected
    • 9.16.4.39: Affected
    • 9.18.3.56: Affected
    • 9.20.1: Affected
    • 9.16.4.42: Affected
    • 9.19.1.22: Affected
    • 9.18.4: Affected
    • 9.20.1.5: Affected
    • 9.18.4.5: Affected
    • 9.19.1.24: Affected
    • 9.16.4.48: Affected
    • 9.18.4.8: Affected
    • 9.20.2: Affected
    • 9.19.1.27: Affected
    • 9.16.4.55: Affected
    • 9.18.4.22: Affected
    • 9.20.2.10: Affected
    • 9.16.4.57: Affected
    • 9.19.1.28: Affected
    • 9.18.4.24: Affected
    • 9.20.2.21: Affected
    • 9.16.4.61: Affected
    • 9.19.1.31: Affected
    • 9.18.4.29: Affected
    • 9.20.2.22: Affected
    • 9.16.4.62: Affected
    • 9.18.4.34: Affected
    • 9.20.3: Affected
    • 9.16.4.67: Affected
    • 9.16.4.70: Affected
    • 9.18.4.40: Affected
    • 9.23.1: Affected
    • 9.22.1.1: Affected
    • 9.16.4.71: Affected
    • 9.20.3.4: Affected
    • 9.18.4.47: Affected
    • 9.20.3.7: Affected
    • 9.19.1.37: Affected
    • 9.16.4.76: Affected
    • 9.20.3.9: Affected
    • 9.19.1.38: Affected
    • 9.18.4.50: Affected
    • 9.22.1.3: Affected
    • 9.20.3.10: Affected
    • 9.22.1.2: Affected
    • 9.18.4.52: Affected
    • 9.20.3.13: Affected
    • 9.22.1.6: Affected
    • 9.18.4.53: Affected
    • 9.16.4.82: Affected
    • 9.22.2: Affected
    • 9.20.3.16: Affected
    • 9.19.1.42: Affected
    • 9.18.4.57: Affected
    • 9.16.4.84: Affected
    • 9.23.1.3: Affected
    • 9.20.3.20: Affected
    • 9.22.2.4: Affected
    • 9.23.1.7: Affected
    • 9.20.4: Affected

    No fix published

  • cisco secure firewall threat defense (ftd) software

    Versions
    • 7.0.0: Affected
    • 7.0.0.1: Affected
    • 7.0.1: Affected
    • 7.0.1.1: Affected
    • 7.0.2: Affected
    • 7.2.0: Affected
    • 7.0.2.1: Affected
    • 7.0.3: Affected
    • 7.2.0.1: Affected
    • 7.0.4: Affected
    • 7.2.1: Affected
    • 7.0.5: Affected
    • 7.3.0: Affected
    • 7.2.2: Affected
    • 7.2.3: Affected
    • 7.3.1: Affected
    • 7.2.4: Affected
    • 7.0.6: Affected
    • 7.2.5: Affected
    • 7.2.4.1: Affected
    • 7.3.1.1: Affected
    • 7.4.0: Affected
    • 7.0.6.1: Affected
    • 7.2.5.1: Affected
    • 7.4.1: Affected
    • 7.2.6: Affected
    • 7.0.6.2: Affected
    • 7.4.1.1: Affected
    • 7.2.7: Affected
    • 7.2.5.2: Affected
    • 7.3.1.2: Affected
    • 7.2.8: Affected
    • 7.6.0: Affected
    • 7.4.2: Affected
    • 7.2.8.1: Affected
    • 7.0.6.3: Affected
    • 7.4.2.1: Affected
    • 7.2.9: Affected
    • 7.0.7: Affected
    • 7.7.0: Affected
    • 7.4.2.2: Affected
    • 7.2.10: Affected
    • 7.6.1: Affected
    • 7.4.2.3: Affected
    • 7.0.8: Affected
    • 7.6.2: Affected
    • 7.7.10: Affected
    • 7.7.11: Affected
    • 7.0.8.1: Affected
    • 7.6.2.1: Affected
    • 7.7.10.1: Affected
    • 7.4.2.4: Affected
    • 7.2.10.2: Affected
    • 7.4.3: Affected
    • 7.6.4: Affected
    • 10.0.0: Affected
    • 7.4.4: Affected
    • 7.0.9: Affected
    • 7.2.11: Affected
    • 7.4.7: Affected
    • 7.4.8: Affected
    • 7.2.12: Affected
    • 7.6.6: Affected
    • 7.7.13: Affected
    • 10.0.2: Affected
    • 7.0.10: Affected
    • 10.1.0: Affected

    No fix published

Original sources

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