900+ Sangoma FreePBX Instances Compromised in Ongoing Web Shell Attacks
Source: TheHackerNews
Severity: Medium
Overview
The Shadowserver Foundation has revealed that over 900 Sangoma FreePBX instances still remain infected with web shells as part of attacks that exploited a command injection vulnerability starting in December 2025. Of these, 401 instances are located in the U.S., followed by 51 in Brazil, 43 in Canada, 40 in Germany, and 36 in France. The non-profit entity said the compromises are likely This cybersecurity alert (900+ Sangoma FreePBX Instances Compromised in Ongoing Web Shell Attacks) reported by TheHackerNews is classified as Medium severity. Immediate attention is recommended.
Impact
Exploitation of this vulnerability can allow unauthorized access, malware execution, or disruption of critical systems. Security teams should review affected systems and ensure protection mechanisms are in place.
Who Is Affected?
Organizations, cloud infrastructure, and individual users running affected software are at risk. Prioritize updates on internet-facing systems and servers handling sensitive data.
Recommended Actions
- Apply all available security patches immediately.
- Restrict external access to vulnerable services.
- Monitor logs and system behavior for anomalies.
- Maintain backup and recovery procedures.
Conclusion
Staying proactive and informed is critical. Follow the advisory here: Official Advisory. Administrators should act quickly to reduce risk and ensure system integrity.
Tags: OpenAI, Cybersecurity