CVE-2026-76418 KEV
Patch first
On CISA KEV — known exploited in the wild, due 2026-11-01.
Description
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.
Scoring
| CVSS | 8.6 (HIGH, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H |
| EPSS | 0.91% — more likely to be exploited than 60% of all CVEs |
| Weakness | CWE-690 |
| On CISA KEV | yes — remediate by 2026-11-01 |
| Public exploit | none known |
| Published | 2026-10-28 |
| Last modified | 2026-10-30 |
CISA KEV
| Name | Cisco Secure Firewall ASA Software and Cisco Secure FTD Software Unchecked Return Value to NULL Pointer Dereference Vulnerability |
|---|---|
| Added | 2026-10-29 |
| Due | 2026-11-01 |
| Vendor / product | Cisco / Secure Firewall ASA Software and Cisco Secure FTD Software |
| Ransomware use | none reported |
Affected (2)
| Vendor | Product |
|---|---|
| cisco | adaptive security appliance software |
| cisco | secure firewall threat defense |
References
→ the Explorer · watch your stack · NVD