Quick answers
- Is CVE-2026-40843 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-40843 being exploited in the wild.
- How severe is CVE-2026-40843?
- Medium severity, with a CVSS score of 6.5, 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-2026-40843?
- 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-2026-40843 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-40843?
- 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 alarming view component of mbCONNECT24 and mymbCONNECT24 firmware versions 2.20.0 and earlier. The flaw is caused by improper neutralization of special elements within a SQL SELECT command. A remote attacker with low-privileged credentials can inject malicious SQL queries over the network without user interaction. Successful exploitation allows the attacker to read sensitive information from the database, resulting in a total loss of confidentiality. The vulnerability is tracked as CVE-2026-40843 and was disclosed by CERT VDE.
Affected products
- MB connect line mbCONNECT24 <= 2.20.0
- MB connect line mymbCONNECT24 <= 2.20.0
Timeline
- 2026-05-27: disclosed: Initial advisory published by CERT VDE
- 2026-05-27: advisory: NVD record published