SEPPmail Secure Email Gateway up to 15.0.2 GINA Mail missing cryptographic step

CVSS Meta Temp Score
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CTI Interest Score
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4.1$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in SEPPmail Secure Email Gateway up to 15.0.2. Impacted is an unknown function of the component GINA Mail Handler. Performing a manipulation results in missing cryptographic step. This vulnerability was named CVE-2026-29142. The attack may be initiated remotely. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in SEPPmail Secure Email Gateway up to 15.0.2. This affects some unknown processing of the component GINA Mail Handler. The manipulation with an unknown input leads to a missing cryptographic step vulnerability. CWE is classifying the issue as CWE-325. The product does not implement a required step in a cryptographic algorithm, resulting in weaker encryption than advertised by the algorithm. This is going to have an impact on integrity. The summary by CVE is:

SEPPmail Secure Email Gateway before version 15.0.3 allows an attacker to forge a GINA-encrypted email.

The weakness was presented by Andris Suter-Dörig. It is possible to read the advisory at downloads.seppmail.com. This vulnerability is uniquely identified as CVE-2026-29142 since 03/04/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1600 according to MITRE ATT&CK.

Upgrading to version 15.0.3 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Missing cryptographic step
CWE: CWE-325
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Secure Email Gateway 15.0.3

Timelineinfo

03/04/2026 CVE reserved
04/02/2026 +28 days Advisory disclosed
04/02/2026 +0 days VulDB entry created
04/02/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: downloads.seppmail.com
Researcher: Andris Suter-Dörig
Status: Confirmed

CVE: CVE-2026-29142 (🔒)
GCVE (CVE): GCVE-0-2026-29142
GCVE (VulDB): GCVE-100-354843

Entryinfo

Created: 04/02/2026 11:22
Changes: 04/02/2026 11:22 (67)
Complete: 🔍
Cache ID: 216:31E:103

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