Active exploitation of a vulnerability on Cisco Secure Email Gateway

Why this matters

The CSSF alert addresses active exploitation of CVE-2026-76461, an unauthenticated remote code execution vulnerability in Cisco Secure Email Gateway affecting email parsing. The content explicitly mandates that supervised entities take appropriate actions and notify this as a major ICT-related incident under either DORA (Circular 25/893) or CSSF 24/847. This constitutes a binding operational security obligation with immediate compliance implications for all regulated financial entities using affected systems. The critical urgency reflects active exploitation and mandatory notification requirements.

AI-generated classification rationale, not a full analysis. Verify with the original CSSF source before acting. Full disclaimer.