CVE-2026-76418
Reported by cisco · Published October 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.
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.16.1, 9.16.1.28, 9.16.2 |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.0.0, 7.0.0.1, 7.0.1 |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.0.0, 7.0.0.1, 7.0.1 |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.23.1, 9.22.1.1, 9.16.4.71 |
Timeline
- Oct 28, 2026 VulnCheck KEV Exploitation (2 in total, the first dated here)
- Oct 28, 2026 Coalition ESS Score
- Oct 28, 2026 PoC Published (93 in total, the first dated here)
- Oct 28, 2026 CVE Published
- Oct 29, 2026 CISA KEV Added
- Oct 29, 2026 EPSS Score (3 in total, the first dated here)
- Oct 30, 2026 CVE Updated
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln CVE-2026-76418
vulnetix vdb fixes CVE-2026-76418Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
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