Beckhoff.Device.Manager.XAR: Unprotected Alternate Channel
CVE-2025-41727 is a high-severity unprotected alternate channel vulnerability in Beckhoff.Device.Manager.XAR from Beckhoff Automation, with a CVSS 3.1 base score of 7.8 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. The record lists version 2.5.3 as the first without the flaw, so updating Beckhoff.Device.Manager.XAR to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.18% 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
- Update Beckhoff.Device.Manager.XAR to 2.5.3 or a later version.
- Update MDP software package for TwinCAT/BSD to 1.7.0.0 or a later version.
- Update MDP for Beckhoff RT Linux(R) to 0.0.5 or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Beckhoff Automation | Beckhoff.Device.Manager.XAR | before 2.5.3 | 2.5.3 |
| Beckhoff Automation | MDP software package for TwinCAT/BSD | before 1.7.0.0 | 1.7.0.0 |
| Beckhoff Automation | MDP for Beckhoff RT Linux(R) | before 0.0.5 | 0.0.5 |
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
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- 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:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by CNA (cert.vde.com).
Official description
A local low privileged attacker can bypass the authentication of the Device Manager user interface, allowing them to perform privileged operations and gain administrator access.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Unprotected Alternate Channel
The product protects a primary channel, but it does not use the same level of protection for an alternate channel.
How developers prevent this class of flaw
- Identify all alternate channels and use the same protection mechanisms that are used for the primary channels.
More Unprotected Alternate Channel vulnerabilities (CWE-420)
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 Beckhoff.Device.Manager.XAR
- 8.8 High severity
Recent Unprotected Alternate Channel vulnerabilities
- 7.5 High severity
- 8.8 High severity
- 9.8 Critical severity
- 8.0 High severity
- 8.8 High severity
- 7.4 High severity
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