CVE-2025-56425: Optimal-Systems Enaio

Critical severity, CVSS 9.1. EPSS: 0.7% chance of exploitation in the next 30 days.

An issue was discovered in the AppConnector component version 10.10.0.183 and earlier of enaio 10.10, in the AppConnector component version 11.0.0.183 and earlier of enaio 11.0, and in the AppConnctor component version 11.10.0.183 and earlier of enaio 11.10. The vulnerability allows authenticated remote attackers to inject arbitrary SMTP commands via crafted input to the /osrest/api/organization/sendmail endpoint

Affected products

• Optimal-Systems Enaio: from 10.10.0.0, before 10.10.0.183 (fixed in 10.10.0.183); from 11.0.0.0, before 11.0.0.183 (fixed in 11.0.0.183); from 11.10.0.0, before 11.10.0.183 (fixed in 11.10.0.183)

Published 2026-01-08. Last modified 2026-06-17.