Exploited vulnerability · CISA KEV

Is CVE-2025-57819 exploited? Yes: in CISA KEV since 29 Aug 2025

Gociux · Sangoma FreePBX · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2025-57819, Sangoma FreePBX Authentication Bypass Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 29 Aug 2025, 1 days after it was published. It affects Sangoma FreePBX. If you run it, CISA's required action is: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

What it is

Sangoma FreePBX contains an authentication bypass vulnerability due to insufficiently sanitized user-supplied data allows unauthenticated access to FreePBX Administrator leading to arbitrary database manipulation and remote code execution.

What to do

1. Check whether you run it. Look for FreePBX in your asset inventory, including appliances and cloud images. Stack check lists every exploited Sangoma CVE at once.
2. Apply the fix. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 28 Aug 2025.
4. Get told next time. Email alerts when CISA adds a CVE for Sangoma.

Other exploited CVEs in FreePBX

• CVE-2025-64328: Sangoma FreePBX OS Command Injection Vulnerability (3 Feb 2026)
• CVE-2019-19006: Sangoma FreePBX Improper Authentication Vulnerability (3 Feb 2026)

References

• github.com/FreePBX/security-reporting/security/advisories/GHSA-m42g-xg
• nvd.nist.gov/vuln/detail/CVE-2025-57819

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in August 2025 · Sangoma scorecard · act-now radar.