Luxembourg Financial Sector Warned of Critical Cisco Vulnerability

The Luxembourg financial sector is on high alert after the CSSF (Commission de Surveillance du Secteur Financier) warned of an actively exploited vulnerability in Cisco email gateways.

The vulnerability, known as 'CVE-2026-76461', affects the way emails are analysed by the Cisco AsyncOS software, potentially allowing unauthenticated remote attackers to execute arbitrary commands with 'root' privileges on the underlying operating system.

The CSSF strongly recommends that all relevant supervised entities take due note of this report and take the appropriate measures. Circl, the Luxembourg computer incident response centre, is monitoring the vulnerability and will publish any recommendations.