Beckhoff.Device.Manager.XAR: Integer Overflow or Wraparound
CVE-2025-41726 is a high-severity integer overflow or wraparound vulnerability in Beckhoff.Device.Manager.XAR from Beckhoff Automation, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network 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 0.48% 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
- NetworkCan be exploited remotely over a network, including the internet.
- 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:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by CNA (cert.vde.com).
Official description
A low privileged remote attacker can execute arbitrary code by sending specially crafted calls to the web service of the Device Manager or locally via an API and can cause integer overflows which then may lead to arbitrary code execution within privileged processes.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Integer Overflow or Wraparound
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
How developers prevent this class of flaw
- Ensure that all protocols are strictly defined, such that all out-of-bounds behavior can be identified simply, and require strict conformance to the protocol.
- Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. If possible, choose a language or compiler that performs automatic bounds checking.
- Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. Use libraries or frameworks that make it easier to handle numbers without unexpected consequences. Examples include safe integer handling packages such as SafeInt (C++) or IntegerLib (C or C++).
More Integer Overflow or Wraparound vulnerabilities (CWE-190)
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
- 7.8 High severity
Recent Integer Overflow or Wraparound vulnerabilities
- 10.0 Critical severity
- 8.3 High severity
- 7.5 High severity
- 7.8 High severity
- 7.1 High severity
- 8.4 High severity
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