SiRcom SMART Alert (SiSA)
All CISA Advisories
Summary
The SiRcom SMART Alert (SiSA) system has a critical vulnerability due to missing authentication for critical functions, allowing unauthorized remote access to backend APIs. This could enable attackers to manipulate emergency sirens, posing a significant risk to public safety and critical infrastructure.
Impact
SiRcom SMART Alert (SiSA): Version 3.0.48
In the Wild
No
Timeline
Disclosed on November 25, 2025
Remediation
Minimize network exposure for control system devices, ensure they are not accessible from the Internet, locate control system networks behind firewalls, use secure remote access methods like VPNs, and perform proper impact analysis and risk assessment before deploying defensive measures.