CVE-2026-29133
Received Received - Intake
PGP Key UID Mismatch Vulnerability in SEPPmail Gateway

Publication date: 2026-04-02

Last updated on: 2026-04-16

Assigner: Switzerland Government Common Vulnerability Program

Description
SEPPmail Secure Email Gateway before version 15.0.3 allows an attacker to upload PGP keys with UIDs that do not match their email address.
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Meta Information
Published
2026-04-02
Last Modified
2026-04-16
Generated
2026-06-16
AI Q&A
2026-04-02
EPSS Evaluated
2026-06-15
NVD
CVE-2026-29133
EUVD
EUVD-2026-18146
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
seppmail secure_email_gateway to 15.0.3 (exc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-20 The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
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Executive Summary

This vulnerability affects SEPPmail Secure Email Gateway versions before 15.0.3. It allows an attacker to upload PGP keys with user IDs (UIDs) that do not match the associated email address.

Impact Analysis

An attacker exploiting this vulnerability could upload PGP keys with mismatched user IDs, potentially leading to confusion or misuse of encryption keys. This could undermine the trustworthiness of encrypted communications and may allow attackers to impersonate others or intercept sensitive information.

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