Quick answers
- Is CVE-2026-40828 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-40828 being exploited in the wild.
- How severe is CVE-2026-40828?
- Medium severity, with a CVSS score of 5.5, 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-2026-40828?
- 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-2026-40828 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-40828?
- 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 DeleteSysLogEntry function of MB connect line mbCONNECT24 and mymbCONNECT24 firmware versions up to 2.20.0. The flaw is caused by improper neutralization of special elements within a SQL DELETE command. While the vulnerability is described as unauthenticated in the function itself, the CVSS metrics indicate it requires high privileges (PR:H) to reach the attack vector. A successful exploit allows a remote attacker to perform unauthorized SELECT queries against the entire database and delete entries within non-critical tables. This results in a total loss of confidentiality and a partial loss of integrity.
Affected products
- MB connect line mbCONNECT24 <= 2.20.0
- MB connect line mymbCONNECT24 <= 2.20.0
Timeline
- 2026-05-27: disclosed
- 2026-05-27: advisory