SiRcom SMART Alert (SiSA)
Plan PatchCVSS 9.1ICS-CERT ICSA-25-329-06Nov 25, 2025
Attack path
Attack VectorNetwork
Auth RequiredNone
ComplexityLow
User InteractionNone needed
Summary
SiRcom SMART Alert (SiSA) version 3.0.48 contains an authentication bypass vulnerability (CWE-306) that allows remote attackers to activate or manipulate emergency sirens without credentials or user interaction. The vulnerability has a CVSS score of 9.1 and is remotely exploitable over the network. SiRcom has not responded to CISA coordination requests and has not released a patch.
What this means
What could happen
An attacker could remotely activate or manipulate emergency sirens without authentication, potentially disrupting public alerts and emergency response capabilities in municipalities that rely on this system.
Who's at risk
Emergency alert system operators and municipal emergency management departments that deploy SiRcom SMART Alert systems for public notification of emergencies, hazards, and safety events.
How it could be exploited
An attacker with network access to the SMART Alert system could send unauthenticated commands over the network to activate, deactivate, or alter siren operation. No authentication or user interaction is required.
Prerequisites
- Network access to the SMART Alert system port
- SMART Alert system reachable from attacker's network location
- No authentication or credentials required
remotely exploitableno authentication requiredlow complexityaffects safety systems and public emergency responseno patch available from vendor
Exploitability
Unlikely to be exploited — EPSS score 0.3%
Affected products (1)
ProductAffected VersionsFix Status
SMART Alert (SiSA): 3.0.483.0.48No fix (EOL)
Remediation & Mitigation
0/5
Do now
0/4WORKAROUNDRestrict network access to SMART Alert system to only authorized management networks using firewall rules (allow inbound access only from engineering workstations and administrative systems)
HARDENINGIsolate the SMART Alert system from the internet and public-facing networks
HARDENINGPlace the SMART Alert system behind a firewall and on a separate network segment from business networks and internet-connected systems
WORKAROUNDIf remote access is required for management, configure a VPN connection and restrict access to specific authorized personnel only
Schedule — requires maintenance window
0/1Patching may require device reboot — plan for process interruption
HOTFIXContact SiRcom for security updates or patches and inquire about long-term fixes for this vulnerability
CVEs (1)
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