SMTP Command Injection Vulnerability in enaio AppConnector
CVE-2025-56425

9.1CRITICAL

Key Information:

Vendor

Optimal Systems

Status
enaio AppConnector
Vendor
CVE Published:
8 January 2026

What is CVE-2025-56425?

A vulnerability in the AppConnector component of enaio allows authenticated remote attackers to execute arbitrary SMTP commands by sending specially crafted inputs to the /osrest/api/organization/sendmail endpoint. This can lead to unauthorized email actions, potentially compromising sensitive data and disrupting operations. Users of the affected versions are advised to implement patches and follow security best practices to mitigate risks.

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References

https://www.optimal-systems.de/enaio
https://mind-bytes.de/smtp-injection-in-enaio-component-a...

CVSS V3.1

Score:
9.1
Severity:
CRITICAL
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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