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
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.
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| seppmail | secure_email_gateway | to 15.0.3 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| 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. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
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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