CVE-2025-3090: MB connect line mbCONNECT24 · Missing Authentication
Affects MB connect line mbCONNECT24Source CVE Database V5
Not known to be exploited · CVSS 8.2 High.
Data as of 26 Oct 2026, 14:05 UTC
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 38% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 24 Jun 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| MB connect line mbCONNECT24 | Affected
| Fixed in– |
AI-suggested
- Immediate network-level protections: Restrict access to mbCONNECT24 devices by implementing strict firewall rules and network segmentation to limit exposure to untrusted networks, especially the internet.
- Deploy VPNs or secure tunnels for remote access to ensure authentication and encryption at the network layer.
- Monitor network traffic for unusual patterns or repeated access attempts targeting mbCONNECT24 devices to detect potential exploitation attempts early.
- Engage with MB connect line for official patches or firmware updates addressing this vulnerability; if unavailable, consider temporary device isolation or replacement.
- Implement compensating controls such as intrusion detection/prevention systems (IDS/IPS) tailored to detect exploitation attempts of this specific vulnerability.
- Conduct thorough asset inventories to identify all mbCONNECT24 instances and prioritize remediation based on criticality.
- Educate operational technology and IT teams about this vulnerability to ensure rapid response and incident handling.
Description
An unauthenticated remote attacker can obtain limited sensitive information and/or DoS the device due to missing authentication for critical function.