CVE-2026-2743criticalCWE-22CWE-434

CVE-2026-2743: critical vulnerability in SeppMail

SEPPmail User Web Interface Arbitrary File Write to RCE

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28Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 10epss 0.9%
Arbitrary File Write via Path Traversal upload to Remote Code Execution in SeppMail User Web Interface. The affected feature is the large file transfer (LFT). This issue affects SeppMail: 15.0.2.1 and before
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/AU:Y
Affected products
SeppMail · SeppMail