Full Report
Users of Industrial Edge Devices are advised to consult the respective Security Advisories for their devices (for Siemens Industrial Edge devices see Additional Information). Industrial Edge Device Kit contains an authorization bypass vulnerability that could facilitate an unauthenticated remote attacker to circumvent authentication and impersonate a legitimate user. Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens recommends specific countermeasures for products where fixes are not, or not yet available.
Analysis Summary
# Vulnerability: Authorization Bypass in Industrial Edge Device Kit
## CVE Details
- CVE ID: CVE-2025-40805
- CVSS Score: 10.0 (Critical) (Based on CVSS v3.1 and v4.0, both yielding 10.0)
- CWE: CWE-639: Authorization Bypass Through User-Controlled Key
## Affected Systems
- Products: Industrial Edge Device Kit - arm64
- Versions: V1.5, V1.6, V1.7, V1.8, V1.9, V1.10, V1.11, V1.12, V1.13, V1.14, V1.15, V1.16 (All listed versions)
- Configurations: Applicable to Industrial Edge Devices built using these affected Device Kit versions. (Note: Downstream devices built by Siemens may have separate advisories, referencing SSA-001536).
## Vulnerability Description
The Industrial Edge Device Kit contains an authorization bypass vulnerability in specific API endpoints. This flaw stems from insufficient enforcement of user authentication. A successful exploitation allows an unauthenticated remote attacker to circumvent authentication mechanisms, impersonate any legitimate user, provided the attacker has learned the identity of the target user.
## Exploitation
- Status: Not explicitly stated as exploited in the wild, but PoC information is generally not disclosed in advisories for critical flaws. Assume risk is high.
- Complexity: Low (Based on CVSS vector PR:N/UI:N/AC:L)
- Attack Vector: Network (AV:N)
## Impact
- Confidentiality: High (C:H)
- Integrity: High (I:H)
- Availability: High (A:H)
The high impact across all three CIA triad elements suggests a complete takeover of user functionality or session integrity.
## Remediation
### Patches
Siemens explicitly states that for the **listed affected versions (V1.5 through V1.16)** of the Industrial Edge Device Kit, **currently no fix is planned** for CVE-2025-40805 within those specific lines. Users are advised to consult the respective Security Advisories for their downstream Industrial Edge Devices and update to the latest versions where fixes are available/included. Older, unmaintained version lines should be updated to newer lines that contain the fix.
### Workarounds
Siemens recommends specific countermeasures (Mitigations) for products where fixes are not, or not yet available. Users must consult the referenced 'Mitigations' section within SSA-014678 for details on these temporary steps.
## Detection
- Indicators of Compromise: The advisory does not list specific IOCs, but successful exploitation involves unauthorized API calls made without valid credentials, resulting in actions logged as a legitimate user.
- Detection methods and tools: Monitor network traffic for unusual API calls directed at the Industrial Edge Device Kit components, especially those that an unauthenticated source might attempt to make to restricted endpoints.
## References
- Vendor advisories: SSA-014678
- Relevant links - defanged:
- Siemens Industrial Security General Information: hxxps://www.siemens.com/industrialsecurity
- Siemens ProductCERT Advisories: hxxps://www.siemens.com/cert/advisories
- Downstream Siemens Devices Advisory: hxxps://cert-portal.siemens.com/productcert/html/ssa-001536.html