Device Sphere: Improper Filtering of Special Elements
CVE-2026-2328 is a high-severity improper filtering of special elements vulnerability in Device Sphere from WAGO, 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 1.2.2 as the first without the flaw, so updating Device Sphere to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.31% 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 Device Sphere to 1.2.2 or a later version.
- Update Solution Builder to 2.4.2 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 |
|---|---|---|---|
| WAGO | Device Sphere | before 1.2.2 | 1.2.2 |
| WAGO | Solution Builder | before 2.4.2 | 2.4.2 |
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
- HighAll data handled by the component can be read.
- Integrity
- NoneNothing can be modified.
- Availability
- NoneAvailability is not affected.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. Scored by CNA (cert.vde.com).
Official description
An unauthenticated remote attacker can exploit insufficient input validation to access backend components beyond their intended scope via path traversal, resulting in exposure of sensitive information.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Filtering of Special Elements
The product receives data from an upstream component, but it does not filter or incorrectly filters special elements before sending it to a downstream component.
More Improper Filtering of Special Elements vulnerabilities (CWE-790)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Other references
Other vulnerabilities in Device Sphere
- 9.8 Critical severity
Recent Improper Filtering of Special Elements vulnerabilities
- 7.5 High severity
- 8.8 High severity
- 9.8 Critical severity
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