SPRECON-E-C: Use of Default Cryptographic Key
CVE-2025-41744 is a critical-severity use of default cryptographic key vulnerability in SPRECON-E-C from Sprecher-automation, with a CVSS 3.1 base score of 9.1 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. There is no confirmed exploitation so far. EPSS estimates a 0.44% chance of exploitation within 30 days, which is low compared with other CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Check which version of SPRECON-E-C you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on sprecher-automation.com for workarounds and exact fixed builds.
- 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 |
|---|---|---|---|
| Sprecher Automation | SPRECON-E-C | Not specified in the record | Not stated |
| Sprecher Automation | SPRECON-E-P | Not specified in the record | Not stated |
| Sprecher Automation | SPRECON-E-T3 | Not specified in the record | Not stated |
| Sprecher-automation | Sprecon-e-c Firmware | Not specified in the record | Not stated |
| Sprecher-automation | Sprecon-e-p Firmware | Not specified in the record | Not stated |
| Sprecher-automation | Sprecon-e-t3 Firmware | Not specified in the record | Not stated |
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
- HighData or code can be modified at will.
- Availability
- NoneAvailability is not affected.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N. Scored by CNA (cert.vde.com).
Official description
Sprecher Automations SPRECON-E series uses default cryptographic keys that allow an unprivileged remote attacker to access all encrypted communications, thereby compromising confidentiality and integrity.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Use of Default Cryptographic Key
The product uses a default cryptographic key for potentially critical functionality.
How developers prevent this class of flaw
- Prohibit use of default, hard-coded, or other values that do not vary for each installation of the product - especially for separate organizations.
- Force the administrator to change the credential upon installation.
- The product administrator could change the defaults upon installation or during operation.
More Use of Default Cryptographic Key vulnerabilities (CWE-1394)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in SPRECON-E-C
- 9.8 Critical severity
Recent Use of Default Cryptographic Key vulnerabilities
- 8.1 High severity
- 9.1 Critical severity
- 9.1 Critical severity
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