Answer in brief
CVE-2026-76418 records a High severity (CVSS 8.6) vulnerability in Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Remote Access SSL VPN Tunnel Denial of Service Vulnerability. The current sources do not mark it as known exploited. The current feed maps Cisco/Cisco Secure Firewall Adaptive Security Appliance (ASA) Software (generic), Cisco/Cisco Secure Firewall Threat Defense (FTD) Software (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.6. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Cisco/Cisco Secure Firewall Adaptive Security Appliance (ASA) Software (generic), Cisco/Cisco Secure Firewall Threat Defense (FTD) Software (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Cisco/Cisco Secure Firewall Adaptive Security Appliance (ASA) Softwaregeneric | 9.16.1 || 9.16.1.28 || 9.16.2 || 9.16.2.3 || 9.16.2.7 || 9.16.2.11 || 9.16.2.13 || 9.16.2.14 || 9.16.3.3 || 9.16.3 || 9.16.3.14 || 9.18.1 || 9.16.3.15 || 9.18.1.3 || 9.18.2 || 9.16.3.19 || 9.16.3.23 || 9.18.2.5 || 9.16.4 || 9.18.2.7 || 9.19.1 || 9.16.4.9 || 9.18.2.8 || 9.16.4.14 || 9.18.3 || 9.19.1.5 || 9.16.4.18 || 9.19.1.9 || 9.18.3.39 || 9.16.4.19 || 9.19.1.12 || 9.18.3.46 || 9.16.4.27 || 9.19.1.18 || 9.18.3.53 || 9.18.3.55 || 9.16.4.38 || 9.16.4.39 || 9.18.3.56 || 9.20.1 || 9.16.4.42 || 9.19.1.22 || 9.18.4 || 9.20.1.5 || 9.18.4.5 || 9.19.1.24 || 9.16.4.48 || 9.18.4.8 || 9.20.2 || 9.19.1.27 || 9.16.4.55 || 9.18.4.22 || 9.20.2.10 || 9.16.4.57 || 9.19.1.28 || 9.18.4.24 || 9.20.2.21 || 9.16.4.61 || 9.19.1.31 || 9.18.4.29 || 9.20.2.22 || 9.16.4.62 || 9.18.4.34 || 9.20.3 || 9.16.4.67 || 9.16.4.70 || 9.18.4.40 || 9.23.1 || 9.22.1.1 || 9.16.4.71 || 9.20.3.4 || 9.18.4.47 || 9.20.3.7 || 9.19.1.37 || 9.16.4.76 || 9.20.3.9 || 9.19.1.38 || 9.18.4.50 || 9.22.1.3 || 9.20.3.10 || 9.22.1.2 || 9.18.4.52 || 9.20.3.13 || 9.22.1.6 || 9.18.4.53 || 9.16.4.82 || 9.22.2 || 9.20.3.16 || 9.19.1.42 || 9.18.4.57 || 9.16.4.84 || 9.23.1.3 || 9.20.3.20 || 9.22.2.4 || 9.23.1.7 || 9.20.4 || 9.22.2.9 || 9.23.1.13 || 9.20.4.7 || 9.22.2.13 || 9.18.4.66 || 9.20.4.10 || 9.23.1.19 || 9.16.4.85 || 9.22.2.14 || 9.18.4.67 || 9.24.1 || 9.18.4.68 || 9.23.1.22 || 9.20.4.14 || 9.22.2.20 || 9.18.4.71 || 9.20.4.19 || 9.23.1.26 || 9.16.4.89 || 9.22.2.32 || 9.18.4.76 || 9.22.3 || 9.24.1.5 || 9.20.4.22 || 9.24.1.9 || 9.20.4.28 || 9.22.3.5 || 9.16.4.92 || 9.18.4.135 || 9.23.1.195 || 9.20.4.30 || 9.24.1.155 || 9.23.1.32 || 9.24.1.11 || 9.20.4.34 || 9.18.4.82 || 9.24.10 || 9.18.4.90 || 9.20.4.46 || 9.20.4.235 || 9.20.4.49 || 9.22.3.26 || 9.16.4.103 || 9.18.4.94 || 9.23.1.47 || 9.24.1.26 | Not reported |
| Cisco/Cisco Secure Firewall Threat Defense (FTD) Softwaregeneric | 7.0.0 || 7.0.0.1 || 7.0.1 || 7.0.1.1 || 7.0.2 || 7.2.0 || 7.0.2.1 || 7.0.3 || 7.2.0.1 || 7.0.4 || 7.2.1 || 7.0.5 || 7.3.0 || 7.2.2 || 7.2.3 || 7.3.1 || 7.2.4 || 7.0.6 || 7.2.5 || 7.2.4.1 || 7.3.1.1 || 7.4.0 || 7.0.6.1 || 7.2.5.1 || 7.4.1 || 7.2.6 || 7.0.6.2 || 7.4.1.1 || 7.2.7 || 7.2.5.2 || 7.3.1.2 || 7.2.8 || 7.6.0 || 7.4.2 || 7.2.8.1 || 7.0.6.3 || 7.4.2.1 || 7.2.9 || 7.0.7 || 7.7.0 || 7.4.2.2 || 7.2.10 || 7.6.1 || 7.4.2.3 || 7.0.8 || 7.6.2 || 7.7.10 || 7.7.11 || 7.0.8.1 || 7.6.2.1 || 7.7.10.1 || 7.4.2.4 || 7.2.10.2 || 7.4.3 || 7.6.4 || 10.0.0 || 7.4.4 || 7.0.9 || 7.2.11 || 7.4.7 || 7.4.8 || 7.2.12 || 7.6.6 || 7.7.13 || 10.0.2 || 7.0.10 || 10.1.0 | Not reported |
Published upstream
Oct 28, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 28, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 28, 2026
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.
Quoted source text, attributed separately from HOL analysis.