CVE-2026-2746
PGP Signature Verification Bypass in SEPPmail Secure Email Gateway
Publication date: 2026-03-04
Last updated on: 2026-03-05
Assigner: Switzerland Government Common Vulnerability Program
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| seppmail | seppmail | to 15.0.1 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-347 | The product does not verify, or incorrectly verifies, the cryptographic signature for data. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability affects SEPPmail Secure Email Gateway versions before 15.0.1. The software does not properly communicate the results of PGP signature verification, which means users cannot reliably detect if an email's signature has been forged.
How can this vulnerability impact me? :
Because the software fails to properly indicate whether a PGP signature is valid, users may be unable to identify forged or tampered emails. This can lead to accepting fraudulent messages as legitimate, potentially resulting in security breaches, misinformation, or unauthorized actions based on forged communications.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know