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Medium severity5.3NVD Advisory· Published Apr 2, 2026· Updated Apr 16, 2026

CVE-2026-29140

CVE-2026-29140

Description

SEPPmail Secure Email Gateway before version 15.0.3 allows an attacker to cause attacker-controlled certificates to be used for future encryption to a victim by adding the certificates to S/MIME signatures.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

2
  • Seppmail/Secure Email Gateway2 versions
    cpe:2.3:a:seppmail:secure_email_gateway:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:seppmail:secure_email_gateway:*:*:*:*:*:*:*:*range: <15.0.3
    • (no CPE)range: <15.0.3

Patches

Vulnerability mechanics

References

1

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