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4 vulnerabilities found for SEPPmail Secure Email Gateway (SEG) by SEPPmail AG
CVE-2026-84832 (GCVE-0-2026-84832)
Vulnerability from nvd – Published: 2026-09-03 08:45 – Updated: 2026-09-04 16:52
VLAI
EPSS
VEX
Title
Unsafe deserialization in the REST interface
Summary
SEPPmail Secure Email Gateway before 15.0.6 deserializes attacker-controlled data in a privileged REST import workflow without adequate validation. An attacker with a privileged API token can execute arbitrary commands with "nobody" privileges.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 12:32 UTC
CWE
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SEPPmail AG | SEPPmail Secure Email Gateway (SEG) |
Affected:
0 , < 15.0.6
(custom)
|
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CVE-2026-84831 (GCVE-0-2026-84831)
Vulnerability from nvd – Published: 2026-09-03 08:43 – Updated: 2026-09-03 12:34
VLAI
EPSS
VEX
Title
Mandatory MFA bypass before enrollment
Summary
SEPPmail Secure Email Gateway before 15.0.7 creates a fully privileged session before required multi-factor authentication enrollment is completed. An attacker with the password for an MFA-required but unenrolled account can access protected functionality without providing a second factor.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 12:34 UTC
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SEPPmail AG | SEPPmail Secure Email Gateway (SEG) |
Affected:
0 , < 15.0.7
(custom)
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CVE-2026-84832 (GCVE-0-2026-84832)
Vulnerability from cvelistv5 – Published: 2026-09-03 08:45 – Updated: 2026-09-04 16:52
VLAI
EPSS
VEX
Title
Unsafe deserialization in the REST interface
Summary
SEPPmail Secure Email Gateway before 15.0.6 deserializes attacker-controlled data in a privileged REST import workflow without adequate validation. An attacker with a privileged API token can execute arbitrary commands with "nobody" privileges.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 12:32 UTC
CWE
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SEPPmail AG | SEPPmail Secure Email Gateway (SEG) |
Affected:
0 , < 15.0.6
(custom)
|
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CVE-2026-84831 (GCVE-0-2026-84831)
Vulnerability from cvelistv5 – Published: 2026-09-03 08:43 – Updated: 2026-09-03 12:34
VLAI
EPSS
VEX
Title
Mandatory MFA bypass before enrollment
Summary
SEPPmail Secure Email Gateway before 15.0.7 creates a fully privileged session before required multi-factor authentication enrollment is completed. An attacker with the password for an MFA-required but unenrolled account can access protected functionality without providing a second factor.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 12:34 UTC
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SEPPmail AG | SEPPmail Secure Email Gateway (SEG) |
Affected:
0 , < 15.0.7
(custom)
|
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