CVE-2026-44126
SEPPmail Secure Email Gateway Deserialization Flaw Allows RCE
Publication date: 2026-05-08
Last updated on: 2026-05-08
Assigner: Switzerland Government Common Vulnerability Program
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| seppmail | secure_email_gateway | to 15.0.4 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-502 | The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in SEPPmail Secure Email Gateway versions before 15.0.4. It involves insecure deserialization of untrusted data, which can be accessed through the new GINA UI. An unauthenticated remote attacker could exploit this by sending a specially crafted serialized object, potentially allowing them to execute arbitrary code on the affected system.
How can this vulnerability impact me? :
The vulnerability can allow unauthenticated remote attackers to execute arbitrary code on the affected SEPPmail Secure Email Gateway system. This could lead to full system compromise, unauthorized access to sensitive email data, disruption of email services, and potential further attacks within the network.