CVE-2026-8811: high-severity vulnerability in SEPPmail AG Secure Email Gateway
Path traversal in PDF generation module
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.1epss 0.3%
SEPPmail versions before 15.0.5 allow improper handling of attachment filenames during encrypted PDF generation. An attacker can exploit this to create new files outside the intended directory, potentially placing files in web-accessible locations.
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:H/SA:L
Affected products
SEPPmail AG · Secure Email GatewayRelated CVEs — SEPPmail AG Secure Email Gateway
In the same product, most dangerous first.
CVE-2026-7864MEDIUMExposure of Sensitive Information to an Unauthorized ActorEPSS 16.1%CVE-2026-44127HIGHLocal File Inclusion (LFI) and Arbitrary File DeletionEPSS 14.8%CVE-2026-84830HIGHOS command injection in privileged configuration handlingEPSS 1.2%CVE-2026-44128CRITICALUnauthenticated Remote Code ExecutionEPSS 0.8%CVE-2026-44129HIGHServer-side template injectionEPSS 0.5%CVE-2026-44126CRITICALInsecure deserializationEPSS 0.5%