RUGGEDCOM ROX MX5000: Authentication Bypass Using an Alternate Path or Channel
CVE-2025-40761 is a high-severity authentication bypass using an alternate path or channel vulnerability in RUGGEDCOM ROX MX5000 from Siemens, with a CVSS 3.1 base score of 7.6 out of 10. It can be exploited with physical access to the device by an unauthenticated attacker, without any action from a user. Affected RUGGEDCOM ROX MX5000 versions: all versions. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.27% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of RUGGEDCOM ROX MX5000 you run against the affected versions below, and install the vendor's latest release.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Siemens | RUGGEDCOM ROX MX5000 | all versions | Not stated |
| Siemens | RUGGEDCOM ROX MX5000RE | all versions | Not stated |
| Siemens | RUGGEDCOM ROX RX1400 | all versions | Not stated |
| Siemens | RUGGEDCOM ROX RX1500 | all versions | Not stated |
| Siemens | RUGGEDCOM ROX RX1501 | all versions | Not stated |
| Siemens | RUGGEDCOM ROX RX1510 | all versions | Not stated |
| Siemens | RUGGEDCOM ROX RX1511 | all versions | Not stated |
| Siemens | RUGGEDCOM ROX RX1512 | all versions | Not stated |
| Siemens | RUGGEDCOM ROX RX1524 | all versions | Not stated |
| Siemens | RUGGEDCOM ROX RX1536 | all versions | Not stated |
| Siemens | RUGGEDCOM ROX RX5000 | all versions | Not stated |
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
- PhysicalThe attacker must physically touch the device.
- 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
- ChangedThe attack can reach beyond the vulnerable component into other systems.
- 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:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H. Scored by CNA (siemens.com).
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 8.6 | High | CNA (siemens.com) |
| CVSS 3.1 | 7.6 | High | CNA (siemens.com) |
Official description
A vulnerability has been identified in RUGGEDCOM ROX MX5000 (All versions), RUGGEDCOM ROX MX5000RE (All versions), RUGGEDCOM ROX RX1400 (All versions), RUGGEDCOM ROX RX1500 (All versions), RUGGEDCOM ROX RX1501 (All versions), RUGGEDCOM ROX RX1510 (All versions), RUGGEDCOM ROX RX1511 (All versions), RUGGEDCOM ROX RX1512 (All versions), RUGGEDCOM ROX RX1524 (All versions), RUGGEDCOM ROX RX1536 (All versions), RUGGEDCOM ROX RX5000 (All versions). Affected devices do not properly limit access through its Built-In-Self-Test (BIST) mode. This could allow an attacker with physical access to the serial interface to bypass authentication and get access to a root shell on the device.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Authentication Bypass Using an Alternate Path or Channel
The product requires authentication, but the product has an alternate path or channel that does not require authentication.
How developers prevent this class of flaw
- Funnel all access through a single choke point to simplify how users can access a resource. For every access, perform a check to determine if the user has permissions to access the resource.
More Authentication Bypass Using an Alternate Path or Channel vulnerabilities (CWE-288)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Other references
Other vulnerabilities in RUGGEDCOM ROX MX5000
- 9.1 Critical severity
- 7.5 High severity
- 9.8 Critical severity
- 7.2 High severity
- 7.2 High severity
- 7.2 High severity
Recent Authentication Bypass Using an Alternate Path or Channel vulnerabilities
- 8.1 High severity
- 8.3 High severity
- 9.8 Critical severity
- 8.8 High severity
- 9.8 Critical severity
- 9.8 Critical severity
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