ProGauge MagLink LX 4: Use of Weak Credentials
CVE-2025-30519 is a critical-severity use of weak credentials vulnerability in ProGauge MagLink LX 4 from Dover Fueling Solutions, with a CVSS 3.1 base score of 9.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists version 4.20.3 as the first without the flaw, so updating ProGauge MagLink LX 4 to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.45% chance of exploitation within 30 days, which is low compared with other CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Update ProGauge MagLink LX 4 to 4.20.3 or a later version.
- Update ProGauge MagLink LX Plus to 4.20.3 or a later version.
- Update ProGauge MagLink LX Ultimate to 5.20.3 or a later version.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Dover Fueling Solutions | ProGauge MagLink LX 4 | before 4.20.3 | 4.20.3 |
| Dover Fueling Solutions | ProGauge MagLink LX Plus | before 4.20.3 | 4.20.3 |
| Dover Fueling Solutions | ProGauge MagLink LX Ultimate | before 5.20.3 | 5.20.3 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by CNA (hq.dhs.gov).
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 9.3 | Critical | CNA (hq.dhs.gov) |
| CVSS 3.1 | 9.8 | Critical | CNA (hq.dhs.gov) |
Official description
Dover Fueling Solutions ProGauge MagLink LX4 Devices have default root credentials that cannot be changed through standard administrative means. An attacker with network access to the device can gain administrative access to the system.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Use of Weak Credentials
The product uses weak credentials (such as a default key or hard-coded password) that can be calculated, derived, reused, or guessed by an attacker.
How developers prevent this class of flaw
- When the user changes or sets a password, check the password against a database of already compromised or breached passwords. These passwords are likely to be used in password guessing attacks.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Other references
Other vulnerabilities in ProGauge MagLink LX 4
- 8.2 High severity
- 9.8 Critical severity
- 9.8 Critical severity
Recent Use of Weak Credentials vulnerabilities
- 7.2 High severity
- 7.5 High severity
- 9.8 Critical severity
- 8.7 High severity
- 9.5 Critical severity
- 7.5 High severity
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