modulo 6 devices modu680-AS: Improper Validation of Syntactic Correctness of Input
CVE-2025-41719 is a high-severity improper validation of syntactic correctness of input vulnerability in modulo 6 devices modu680-AS from Sauter, 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 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 0.56% 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.
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
- 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 corrupt the webserver users storage on the device by setting a sequence of unsupported characters which leads to deletion of all previously configured users and the creation of the default Administrator with a known default password.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Validation of Syntactic Correctness of Input
The product receives input that is expected to be well-formed - i.e., to comply with a certain syntax - but it does not validate or incorrectly validates that the input complies with the syntax.
More Improper Validation of Syntactic Correctness of Input vulnerabilities (CWE-1286)
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
- 7.5 High severity
- 9.8 Critical severity
- 7.5 High severity
Recent Improper Validation of Syntactic Correctness of Input vulnerabilities
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
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