Quick answers
- Is CVE-2026-40836 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-40836 being exploited in the wild.
- How severe is CVE-2026-40836?
- High severity, with a CVSS score of 7.1, published 27 May 2026.
- Which products and versions are affected?
- MB connect line mbCONNECT24 <= 2.20.0; MB connect line mymbCONNECT24 <= 2.20.0.
- Is there a fix for CVE-2026-40836?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-40836 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-40836?
- Check whether you run MB connect line mbCONNECT24 or MB connect line mymbCONNECT24 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A SQL injection vulnerability exists in the 'inmessage' model of MB connect line mbCONNECT24 and mymbCONNECT24 firmware versions up to and including 2.20.0. The flaw is caused by improper neutralization of special elements within a SQL DELETE command. A remote attacker with low privileges can exploit this vulnerability over the network without user interaction. Successful exploitation allows the attacker to perform unauthorized database queries to read all table data and delete entries within non-critical tables, resulting in a total loss of confidentiality and partial loss of integrity. Users are advised to update to a patched version if available.
Affected products
- MB connect line mbCONNECT24 <= 2.20.0
- MB connect line mymbCONNECT24 <= 2.20.0
Timeline
- 2026-05-27: advisory: VDE-2026-044 published by CERT VDE
- 2026-05-27: disclosed: CVE-2026-40836 published to NVD