CVE-2026-44126: CWE-502 Deserialization of untrusted data in SEPPmail AG Secure Email Gateway
SEPPmail Secure Email Gateway before version 15.0.4 insecurely deserializes untrusted data, which can be reached from the new GINA UI and may allow unauthenticated remote attackers to execute code via a crafted serialized object.
AI Analysis
Technical Summary
SEPPmail AG Secure Email Gateway prior to version 15.0.4 contains a CWE-502 vulnerability due to insecure deserialization of untrusted data. This flaw is reachable through the new GINA UI and can be exploited remotely without authentication by submitting malicious serialized objects, potentially leading to remote code execution. The CVSS 4.0 vector indicates network attack vector, low attack complexity, no privileges or user interaction required, and high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation of this vulnerability allows unauthenticated remote attackers to execute arbitrary code on the affected system, compromising confidentiality, integrity, and availability of the Secure Email Gateway. This could lead to full system compromise or disruption of email security functions.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or patch links are provided, users should monitor SEPPmail AG communications for updates. Until a patch is available, consider restricting access to the GINA UI or implementing network-level controls to limit exposure.
CVE-2026-44126: CWE-502 Deserialization of untrusted data in SEPPmail AG Secure Email Gateway
Description
SEPPmail Secure Email Gateway before version 15.0.4 insecurely deserializes untrusted data, which can be reached from the new GINA UI and may allow unauthenticated remote attackers to execute code via a crafted serialized object.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
SEPPmail AG Secure Email Gateway prior to version 15.0.4 contains a CWE-502 vulnerability due to insecure deserialization of untrusted data. This flaw is reachable through the new GINA UI and can be exploited remotely without authentication by submitting malicious serialized objects, potentially leading to remote code execution. The CVSS 4.0 vector indicates network attack vector, low attack complexity, no privileges or user interaction required, and high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation of this vulnerability allows unauthenticated remote attackers to execute arbitrary code on the affected system, compromising confidentiality, integrity, and availability of the Secure Email Gateway. This could lead to full system compromise or disruption of email security functions.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or patch links are provided, users should monitor SEPPmail AG communications for updates. Until a patch is available, consider restricting access to the GINA UI or implementing network-level controls to limit exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- NCSC.ch
- Date Reserved
- 2026-05-05T12:56:43.131Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69fdede4cbff5d8610dd27ba
Added to database: 5/8/2026, 2:06:28 PM
Last enriched: 5/8/2026, 2:22:00 PM
Last updated: 5/9/2026, 5:34:16 AM
Views: 7
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