modulo 6 devices modu680-AS: Failure to Handle Incomplete Element
CVE-2025-41724 is a high-severity failure to handle incomplete element vulnerability in modulo 6 devices modu680-AS from Sauter, with a CVSS 3.1 base score of 7.5 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 Firmware v3.2.0 as the first without the flaw, so updating modulo 6 devices modu680-AS to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.47% 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 modulo 6 devices modu680-AS to Firmware v3.2.0 or a later version.
- Update modulo 6 devices modu660-AS to Firmware v3.2.0 or a later version.
- Update modulo 6 devices modu612-LC to Firmware v3.2.0 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 |
|---|---|---|---|
| Sauter | modulo 6 devices modu680-AS | before Firmware v3.2.0 | Firmware v3.2.0 |
| Sauter | modulo 6 devices modu660-AS | before Firmware v3.2.0 | Firmware v3.2.0 |
| Sauter | modulo 6 devices modu612-LC | before Firmware v3.2.0 | Firmware v3.2.0 |
| Sauter | EY-modulo 5 modu 5 modu524 | before Firmware v6.0 | Firmware v6.0 |
| Sauter | EY-modulo 5 modu 5 modu525 | before Firmware v6.0 | Firmware v6.0 |
| Sauter | EY-modulo 5 ecos 5 ecos504/505 | before Firmware v6.0 | Firmware v6.0 |
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
- NoneNo data is disclosed.
- Integrity
- NoneNothing can be modified.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. Scored by CNA (cert.vde.com).
Official description
An unauthenticated remote attacker can crash the wscserver by sending incomplete SOAP requests. The wscserver process will not be restarted by a watchdog and a device reboot is necessary to make it work again.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Failure to Handle Incomplete Element
The product does not properly handle when a particular element is not completely specified.
More Failure to Handle Incomplete Element vulnerabilities (CWE-239)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in modulo 6 devices modu680-AS
- 9.8 Critical severity
- 7.5 High severity
- 8.8 High severity
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