CVE-2025-3090 MB connect line: Missing Authentication in mbCONNECT24/mymbCONNECT24
Unauthenticated attackers can access sensitive information or cause denial of service on MB connect line devices due to missing authentication.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-3090?
CVE-2025-3090 is a high-severity missing authorization vulnerability in Helmholz mbCONNECT24, published on 24 Jun 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An unauthenticated remote attacker can obtain limited sensitive information and/or DoS the device due to missing authentication for critical function.
Weakness: CWE-306
Which versions are affected by CVE-2025-3090?
How do I fix CVE-2025-3090?
No fix has been published for CVE-2025-3090 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2025-3090 being exploited?
There is no known exploitation of CVE-2025-3090 in the wild and no public exploit code.
Sources
Also known as GHSA-675r-p8w7-9hq4.