Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2025-67112 is a critical-severity Use of Hard-coded Cryptographic Key (CWE-321) vulnerability in Fcc (inferred from references). Its CVSS base score is 9.8 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique Private Keys (T1552.004); ranked at the 33th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified map to SC-12 (Cryptographic Key Establishment and Management) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
CVE-2025-67112 is a critical vulnerability involving the use of a hard-coded AES-256-CBC key in the configuration backup and restore implementation of the Small Cell Sercomm SCE4255W (FreedomFi Englewood) firmware versions prior to DG3934v3@2308041842. This flaw, classified under CWE-321 (Use of Hard-coded Cryptographic Key), has a CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) and was published on 2026-03-19.
Remote authenticated users can exploit this vulnerability by leveraging the GUI import/export functions to decrypt device configurations, modify sensitive data such as credentials, re-encrypt the configurations, and then restore them. Successful exploitation enables credential manipulation and privilege escalation on the affected device.
Mitigation requires upgrading to firmware version DG3934v3@2308041842 or later. Additional details are available in related advisories and documentation, including the FCC report at https://fcc.report/FCC-ID/P27-SCE4255W/4790935.pdf, the FreedomFi website at https://freedomfi.com/index.html, and a technical blog post at https://neroteam.com/blog/freedomfi-sercomm-sce4255w-englewood.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-208881
Vulnerability Data
Use of a hard-coded AES-256-CBC key in the configuration backup/restore implementation of Small Cell Sercomm SCE4255W (FreedomFi Englewood) firmware before DG3934v3@2308041842 allows remote authenticated users to decrypt, modify, and re-encrypt device configurations, enabling credential manipulation and privilege escalation via the…
more
GUI import/export functions.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Requiring cryptographic keys to be established and managed according to defined requirements prevents developers from embedding static unchangeable keys.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Secure-SDLC activities such as code review and secret scanning directly prevent embedding static keys.
Data-at-rest protection policies require proper key management and therefore discourage hard-coded keys.
Data-in-transit protection similarly depends on non-hard-coded keys for encryption.
Configuration baselines and reviews can prohibit hard-coded keys in deployed artifacts.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Key-management controls that govern generation, rotation and protection of keys make the use of embedded hard-coded cryptographic keys less likely and easier to detect.