CVE-2026-8811
Received Received - Intake
Improper File Handling in SEPPmail PDF Generation

Publication date: 2026-06-18

Last updated on: 2026-06-18

Assigner: Switzerland Government Common Vulnerability Program

Description
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.
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Meta Information
Published
2026-06-18
Last Modified
2026-06-18
Generated
2026-06-19
AI Q&A
2026-06-18
EPSS Evaluated
2026-06-18
NVD
EUVD
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
seppmail seppmail_secure_e_mail_gateway to 15.0.5 (exc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-22 The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
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Impact Analysis

This vulnerability can allow an attacker to place files in web-accessible locations outside the intended directory.

Such unauthorized file placement could lead to exposure of sensitive information, unauthorized access, or further exploitation of the system.

Executive Summary

SEPPmail versions before 15.0.5 have a vulnerability related to improper handling of attachment filenames during the generation of encrypted PDF files.

An attacker can exploit this flaw to create new files outside the intended directory, which means they could place files in locations that are accessible via the web.

Compliance Impact

The vulnerability in SEPPmail versions before 15.0.5 allows attackers to create files outside the intended directory, potentially placing files in web-accessible locations. This improper handling of attachment filenames during encrypted PDF generation could lead to unauthorized data exposure or manipulation.

Such unauthorized file creation and potential data exposure may impact compliance with data protection regulations like GDPR and HIPAA, which require strict controls over personal and sensitive data to prevent unauthorized access or disclosure.

However, no explicit information is provided in the available context or resources about direct effects or guidance regarding compliance with these standards.

Mitigation Strategies

SEPPmail versions before 15.0.5 are vulnerable due to improper handling of attachment filenames during encrypted PDF generation, which can allow attackers to place files outside intended directories.

To mitigate this vulnerability, upgrade SEPPmail Secure E-Mail Gateway to version 15.0.5 or later where this issue is fixed.

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