Detections
Analytics
Cisco Adaptive Security Appliance (ASA) Software Remote Access SSL VPN Tunnel DoS (cisco-sa-asaftd-tunnel-dos-s6mgkb75)
high Nessus Plugin ID 374261
Synopsis
The remote device is missing a vendor-supplied security patch.Description
According to its self-reported version, Cisco ASA Software is affected by a vulnerability.- 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. (CVE-2026-76418)
Please see the included Cisco BIDs and Cisco Security Advisory for more information.
Solution
Upgrade to the relevant fixed version referenced in Cisco bug ID CSCwx26625See Also
Plugin Details
Severity: High
ID: 374261
File Name: cisco-sa-asaftd-tunnel-dos-s6mgkb75-asa.nasl
Version: 1.2
Type: Local
Family: CISCO
Published: 10/30/2026
Updated: 10/30/2026
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: High
Score: 7.6
Percentile: 98.11
CVSS v2
Risk Factor: High
Base Score: 7.8
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS Score Source: CVE-2026-76418
CVSS v3
Risk Factor: High
Base Score: 8.6
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Vulnerability Information
CPE: cpe:/a:cisco:adaptive_security_appliance_software
Required KB Items: Host/Cisco/ASA/model
Patch Publication Date: 10/28/2026
Vulnerability Publication Date: 10/28/2026
CISA Known Exploited Vulnerability Due Dates: 11/1/2026
Reference Information
CVE: CVE-2026-76418