Full Report
SINEC Security Monitor before V4.10.0 contains multiple vulnerabilities. Siemens has released a new version for SINEC Security Monitor and recommends to update to the latest version.
Analysis Summary
As a vulnerability research specialist, here is the summarized analysis of the Siemens Security Advisory SSA-882673.
# Vulnerability: Multiple Vulnerabilities in SINEC Security Monitor
## CVE Details
| CVE ID | CVSS v3.1 Score (Severity) | CVSS v4.0 Score | CWE |
| :--- | :--- | :--- | :--- |
| **CVE-2025-40830** | 6.7 (Medium/High based on v3.1) | 8.4 (High) | CWE-285: Improper Authorization |
| **CVE-2025-40831** | 6.5 (Medium) | 7.1 (High) | CWE-20: Improper Input Validation |
## Affected Systems
- **Products:** SINEC Security Monitor
- **Versions:** All versions prior to V4.10.0
- **Configurations:** Not explicitly detailed, but CVE-2025-40830 requires an *authenticated, lowly privileged local attacker*, while CVE-2025-40831 requires an *authenticated, lowly privileged attacker* via network.
## Vulnerability Description
This advisory addresses two distinct vulnerabilities in SINEC Security Monitor versions before V4.10.0:
1. **CVE-2025-40830 (Improper Authorization):** The `file_transfer` feature within the `ssmctl-client` command lacks proper authorization checks. This vulnerability allows an authenticated, local attacker with low privileges to achieve arbitrary file read/write access on the server or sensor components.
2. **CVE-2025-40831 (Improper Input Validation):** The report generation functionality fails to sufficiently validate the `date` parameter. This flaw allows an authenticated, lowly privileged attacker to trigger a Denial of Service (DoS) condition specifically affecting the report generation functionality.
## Exploitation
- **Status:** Not explicitly stated, but typically assumed to be unpatched exploitation risk until proven otherwise.
- **Complexity (CVE-2025-40830):** Low (Requires local authentication). Attack Vector: Local.
- **Complexity (CVE-2025-40831):** Low. Attack Vector: Network (Requires authentication).
## Impact
| Vulnerability | Confidentiality | Integrity | Availability |
| :--- | :--- | :--- | :--- |
| **CVE-2025-40830** | High (Arbitrary file read) | High (Arbitrary file write) | High (via file overwrite/corruption) |
| **CVE-2025-40831** | None | None | High (DoS on report functionality) |
## Remediation
### Patches
- **Update to V4.10.0 or a later version.**
- Vendor Advisory Reference: [https://support.industry.siemens.com/cs/ww/en/view/109996215/](https://support.industry.siemens.com/cs/ww/en/view/109996215/)
### Workarounds
- The advisory directs users to check product-specific mitigations in the "Known Affected Products" section of the full advisory.
- **General Mitigation:** Implement strong network access controls to protect devices. Configure the environment according to Siemens' Operational Guidelines for Industrial Security.
## Detection
- Since the vulnerabilities are primarily related to application logic (file operations and input parsing), specific IoCs are not detailed.
- **Detection Methods:** Monitoring for abnormal `ssmctl-client` usage patterns (particularly file transfer operations executed by low-privilege accounts) and monitoring system stability or error logs related to report generation requests with unexpected date formats could indicate attempted exploitation.
## References
- **Vendor Advisory:** SSA-882673
- **Siemens Security Page:** hxxps://www.siemens.com/cert/operational-guidelines-industrial-security
- **Siemens ProductCERT Advisories:** hxxps://www.siemens.com/cert/advisories