Critical severityNVD Advisory· Published May 8, 2026· Updated May 18, 2026

CVE-2026-44126

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 Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Seppmail/Secure Email Gatewayllm-fuzzy
Range: <15.0.4

Patches

Vulnerability mechanics

References

downloads.seppmail.com/extrelnotes/150/ERN15.0.htmlnvd
labs.infoguard.ch/posts/seppmail_secure_e-mail_gateway_rce_vulnerabilities_cve-2026-2743_cve-2026-7864_cve-2026-44127_cve-2026-44128/nvd

News mentions

SEPPMail Secure E-Mail Gateway Vulnerabilities Enable RCE and Mail Traffic Access
The Hacker News · May 19, 2026

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