CVE Alert: CVE-2025-57819 – FreePBX – security-reporting

Risk verdict

Critical risk with exploitation currently active; patch immediately.

Why this matters

Unauthenticated network access leading to arbitrary database manipulation and remote code execution can let an attacker take control of the platform, exfiltrate data, or pivot into connected systems. With full impact on confidentiality, integrity and availability, business operations and customer data could be severely affected, and downtime or service disruption may result.

Most likely attack path

Remote, network-based exploitation requires no user interaction or privileges. The attacker can bypass authentication and trigger SQL injection and RCE via unsanitised input, potentially changing data or executing code with high scope of impact. Given low attack complexity and no preconditions, successful abuse could cascade to broader system compromise.

Who is most exposed

Deployments with publicly reachable admin interfaces or management endpoints are at greatest risk, especially small-to-mid-size on-prem or cloud-hosted instances exposing web-based administration to the internet.

Detection ideas

• Anomalous requests targeting admin endpoints with unusual SQL payloads.
• Database activity spikes or unexpected data manipulation from unauthenticated sources.
• Web server logs showing authentication bypass attempts or suspicious remote code execution patterns.
• IDS/WAF alerts for SQLi/RCE patterns in admin-related traffic.
• Unexpected admin actions or privilege escalations without valid sessions.

Mitigation and prioritisation

• Apply patches to reach 15.0.66, 16.0.89, or 17.0.3 immediately.
• If patching is not possible quickly, restrict admin UI to VPN/IP allowlists; require MFA where feasible.
• Tighten network exposure: place admin interfaces behind a reverse proxy with strict access controls.
• Enable input validation and WAF rules to block SQLi/RCE patterns; review code paths handling admin input.
• Plan a rapid change-management window, verify patch install, and monitor for post-patch anomalies.