CVE-2026-29139 | SEPPmail Secure Email Gateway up to 15.0.2 GINA Account authentication bypass

VDB-354840 · CVE-2026-29139 · GCVE-0-2026-29139 SEPPMAIL SECURE EMAIL GATEWAY UP TO 15.0.2 GINA ACCOUNT AUTHENTICATION BYPASS HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 7.0 $0-$5k 1.26+ Summaryinfo A vulnerability labeled as critical has been found in SEPPmail Secure Email Gateway up to 15.0.2. This affects an unknown part of the component GINA Account Handler. The manipulation results in authentication bypass. This vulnerability is known as CVE-2026-29139. It is possible to launch the attack remotely. No exploit is available. The affected component should be upgraded. Detailsinfo A vulnerability was found in SEPPmail Secure Email Gateway up to 15.0.2. It has been classified as critical. Affected is an unknown part of the component GINA Account Handler. The manipulation with an unknown input leads to a authentication bypass vulnerability. CWE is classifying the issue as CWE-288. A product requires authentication, but the product has an alternate path or channel that does not require authentication. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes: SEPPmail Secure Email Gateway before version 15.0.3 allows account takeover by abusing GINA account initialization to reset a victim account password. The weakness was published by Andris Suter-Dörig. The advisory is shared for download at downloads.seppmail.com. This vulnerability is traded as CVE-2026-29139 since 03/04/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. Upgrading to version 15.0.3 eliminates this vulnerability. Productinfo Vendor SEPPmail Name Secure Email Gateway Version 15.0.0 15.0.1 15.0.2 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: 7.3 VulDB Meta Temp Score: 7.0 VulDB Base Score: 7.3 VulDB Temp Score: 7.0 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Authentication bypass CWE: CWE-288 / CWE-287 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock 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-2026-29139 (🔒) GCVE (CVE): GCVE-0-2026-29139 GCVE (VulDB): GCVE-100-354840 Entryinfo Created: 04/02/2026 11:21 Changes: 04/02/2026 11:21 (68) Complete: 🔍 Cache ID: 99:808:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸