CVE-2026-33617 | MB connect line mbCONNECT24/mymbCONNECT24 up to 2.19.4 Configuration File exposure of sensitive system information to an unauthorized control sphere (VDE-2026-030)

VDB-354853 · CVE-2026-33617 · VDE-2026-030 MB CONNECT LINE MBCONNECT24/MYMBCONNECT24 UP TO 2.19.4 CONFIGURATION FILE EXPOSURE OF SENSITIVE SYSTEM INFORMATION TO AN UNAUTHORIZED CONTROL SPHERE HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 4.7 $0-$5k 1.43+ Summaryinfo A vulnerability identified as problematic has been detected in MB connect line mbCONNECT24 and mymbCONNECT24 up to 2.19.4. This issue affects some unknown processing of the component Configuration File Handler. This manipulation causes exposure of sensitive system information to an unauthorized control sphere. This vulnerability appears as CVE-2026-33617. The attack may be initiated remotely. There is no available exploit. Detailsinfo A vulnerability classified as problematic was found in MB connect line mbCONNECT24 and mymbCONNECT24 up to 2.19.4. Affected by this vulnerability is some unknown functionality of the component Configuration File Handler. The manipulation with an unknown input leads to a exposure of sensitive system information to an unauthorized control sphere vulnerability. The CWE definition for the vulnerability is CWE-497. The product does not properly prevent sensitive system-level information from being accessed by unauthorized actors who do not have the same level of access to the underlying system as the product does. As an impact it is known to affect confidentiality. The summary by CVE is: An unauthenticated remote attacker can access a configuration file containing database credentials. This can result in a some loss of confidentiality, but there is no endpoint exposed to use these credentials. The weakness was presented by Moritz Abrell and Christian Zäske as VDE-2026-030. The advisory is shared at certvde.com. This vulnerability is known as CVE-2026-33617 since 03/23/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/02/2026). MITRE ATT&CK project uses the attack technique T1592 for this issue. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Productinfo Vendor MB connect line Name mbCONNECT24 mymbCONNECT24 Version 2.19.0 2.19.1 2.19.2 2.19.3 2.19.4 License open-source CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 4.8 VulDB Meta Temp Score: 4.7 VulDB Base Score: 4.3 VulDB Temp Score: 4.2 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 5.3 CNA Vector (CERTVDE): 🔒 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: Exposure of sensitive system information to an unauthorized control sphere CWE: CWE-497 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: no mitigation known Status: 🔍 0-Day Time: 🔒 Timelineinfo 03/23/2026 CVE reserved 04/02/2026 +9 days Advisory disclosed 04/02/2026 +0 days VulDB entry created 04/02/2026 +0 days VulDB entry last update Sourcesinfo Advisory: VDE-2026-030 Researcher: Moritz Abrell, Christian Zäske Status: Not defined CVE: CVE-2026-33617 (🔒) GCVE (CVE): GCVE-0-2026-33617 GCVE (VulDB): GCVE-100-354853 Entryinfo Created: 04/02/2026 12:59 Changes: 04/02/2026 12:59 (63) Complete: 🔍 Cache ID: 99:8DC:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸