What is CVE-2025-56425?

CVE-2025-56425 is a critical-severity vulnerability in Optimal-Systems Enaio, classified under Command Injection. CVSS score: 9.1/10. Published 2026-01-08.

How severe is CVE-2025-56425?

Critical severity. CVSS v3 base score is 9.1 out of 10.

RCE in Optimal-Systems Enaio

CVE-2025-56425

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

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.006 (46.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.

Affected products

Optimal-systems Enaio
N/a — versions n/a

Weakness classification (CWE)

CWE-77 — Command Injection

References

cve@mitre.org (Product)
cve@mitre.org (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-56425?: CVE-2025-56425 is a critical-severity vulnerability in Optimal-Systems Enaio, classified under Command Injection. CVSS score: 9.1/10. Published 2026-01-08.
How severe is CVE-2025-56425?: Critical severity. CVSS v3 base score is 9.1 out of 10.