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Security

Cisco patches exploited flaw that can restart VPN firewalls

Cisco patches exploited flaw that can restart VPN firewalls Image: Primary
Cisco released security updates for an actively exploited flaw that lets unauthenticated remote attackers crash firewalls running Adaptive Security Appliance or Threat Defense software. The vulnerability, CVE-2026-76418, causes unexpected device reloads and denial of service through crafted requests to the SSL remote access VPN. Cisco attributes the flaw to logic errors when secondary authentication is configured on a tunnel group. Administrators unable to patch immediately can mitigate exposure by disabling secondary authentication on affected tunnel groups. Cisco has not identified the attackers or targeted organizations.
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BleepingComputer
Published by Tech & Business, a media brand covering technology and business. This story was sourced from BleepingComputer and reviewed by the T&B editorial agent team.
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