CONPROSYS HMI System (CHS): Insertion of Sensitive Information Into Debugging Code
CVE-2025-34081 is a high-severity insertion of sensitive information into debugging code vulnerability in CONPROSYS HMI System (CHS) from Contec, 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 3.7.7 as the first without the flaw, so updating CONPROSYS HMI System (CHS) to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.68% chance of exploitation within 30 days, higher than 53% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update CONPROSYS HMI System (CHS) to 3.7.7 or a later version.
- Update Conprosys Hmi System to 3.7.7 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 |
|---|---|---|---|
| Contec | CONPROSYS HMI System (CHS) | before 3.7.7 | 3.7.7 |
| Contec | Conprosys Hmi System | before 3.7.7 | 3.7.7 |
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 NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 6.9 | Medium | CNA (vulncheck.com) |
| CVSS 3.1 | 7.5 | High | NVD |
Official description
The Contec Co.,Ltd. CONPROSYS HMI System (CHS) exposes a PHP phpinfo() debug page to unauthenticated users that may contain sensitive data useful for an attacker.This issue affects CONPROSYS HMI System (CHS): before 3.7.7.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Insertion of Sensitive Information Into Debugging Code
The product inserts sensitive information into debugging code.
How developers prevent this class of flaw
- Do not leave debug statements that could be executed in the source code. Ensure that all debug information is eradicated before releasing the software.
- Compartmentalize the system to have safe areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area. Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.
More Insertion of Sensitive Information Into Debugging Code vulnerabilities (CWE-215)
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
Third-party and government advisories
- jvn.jp/en/vu/JVNVU92266386/Third Party Advisory
Other vulnerabilities in CONPROSYS HMI System (CHS)
- 8.8 High severity
- 7.2 High severity
- 8.1 High severity
- 8.8 High severity
- 7.8 High severity
- 7.5 High severity
Recent Insertion of Sensitive Information Into Debugging Code vulnerabilities
- 7.5 High severity
- 9.8 Critical severity
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