CVE-2026-29144 | SEPPmail Secure Email Gateway up to 15.0.2 input validation

VDB-354845 · CVE-2026-29144 · GCVE-0-2026-29144 SEPPMAIL SECURE EMAIL GATEWAY UP TO 15.0.2 INPUT VALIDATION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 7.0 $0-$5k 1.43+ Summaryinfo A vulnerability, which was classified as critical, has been found in SEPPmail Secure Email Gateway up to 15.0.2. The impacted element is an unknown function. The manipulation leads to input validation. This vulnerability is referenced as CVE-2026-29144. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component. Detailsinfo A vulnerability, which was classified as critical, has been found in SEPPmail Secure Email Gateway up to 15.0.2. This issue affects an unknown functionality. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. The summary by CVE is: SEPPmail Secure Email Gateway before version 15.0.3 allows an attacker to bypass subject sanitization and forge security tags using Unicode lookalike characters. The weakness was published by Andris Suter-Dörig. The advisory is shared at downloads.seppmail.com. The identification of this vulnerability is CVE-2026-29144 since 03/04/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are 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: Input validation CWE: CWE-20 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-2026-29144 (🔒) GCVE (CVE): GCVE-0-2026-29144 GCVE (VulDB): GCVE-100-354845 Entryinfo Created: 04/02/2026 11:22 Changes: 04/02/2026 11:22 (66) Complete: 🔍 Cache ID: 99:AFD:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸