Uncontrolled resource consumption in Siemens SCALANCE X-200 switch family
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-400.
Summary
A vulnerability has been identified in SCALANCE X-200 switch family (incl. SIPLUS NET variants) (All versions < V5.2.5), SCALANCE X-200IRT switch family (incl. SIPLUS NET variants) (All versions < V5.5.0), SCALANCE X204RNA (HSR) (All versions), SCALANCE X204RNA (PRP) (All versions), SCALANCE X204RNA EEC (HSR) (All versions), SCALANCE X204RNA EEC (PRP) (All versions), SCALANCE X204RNA EEC (PRP/HSR) (All versions). The device contains a vulnerability that could allow an attacker to trigger a denial-of-service condition by sending large message packages repeatedly to the telnet service. The security vulnerability could be exploited by an attacker with network access to the affected systems. Successful exploitation requires no system privileges and no user interaction. An attacker could use the vulnerability to compromise availability of the device.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Siemens | SCALANCE X-200 switch family (incl. SIPLUS NET variants) | before V5.2.5 | V5.2.5 | Patch available | CNA |
| Siemens | SCALANCE X-200IRT switch family (incl. SIPLUS NET variants) | before V5.5.0 | V5.5.0 | Patch available | CNA |
| Siemens | SCALANCE X204RNA (HSR) | All versions | — | No fix listed | CNA |
| Siemens | SCALANCE X204RNA (PRP) | All versions | — | No fix listed | CNA |
| Siemens | SCALANCE X204RNA EEC (HSR) | All versions | — | No fix listed | CNA |
| Siemens | SCALANCE X204RNA EEC (PRP) | All versions | — | No fix listed | CNA |
| Siemens | SCALANCE X204RNA EEC (PRP/HSR) | All versions | — | No fix listed | CNA |
- SCALANCE X-200 switch family (incl. SIPLUS NET variants) VendorSiemens Affected before V5.2.5 Fixed in V5.2.5 Patch available CNA
- SCALANCE X-200IRT switch family (incl. SIPLUS NET variants) VendorSiemens Affected before V5.5.0 Fixed in V5.5.0 Patch available CNA
- SCALANCE X204RNA (HSR) VendorSiemens Affected All versions Fixed in — No fix listed CNA
- SCALANCE X204RNA (PRP) VendorSiemens Affected All versions Fixed in — No fix listed CNA
- SCALANCE X204RNA EEC (HSR) VendorSiemens Affected All versions Fixed in — No fix listed CNA
- SCALANCE X204RNA EEC (PRP) VendorSiemens Affected All versions Fixed in — No fix listed CNA
- SCALANCE X204RNA EEC (PRP/HSR) VendorSiemens Affected All versions Fixed in — No fix listed CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:siemens:scalance_x-200_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Siemens |
| cpe:2.3:h:siemens:scalance_x-200:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:scalance_x-200irt_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Siemens |
| cpe:2.3:h:siemens:scalance_x-200irt:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:scalance_x-200rna_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Siemens |
| cpe:2.3:h:siemens:scalance_x-200rna:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
- cpe:2.3:o:siemens:scalance_x-200_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Siemens
- cpe:2.3:h:siemens:scalance_x-200:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:scalance_x-200irt_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Siemens
- cpe:2.3:h:siemens:scalance_x-200irt:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:scalance_x-200rna_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Siemens
- cpe:2.3:h:siemens:scalance_x-200rna:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
Remediation
- Fix · CNA SCALANCE X-200 switch family (incl. SIPLUS NET variants) (Siemens) Fixed in V5.2.5
- Fix · CNA SCALANCE X-200IRT switch family (incl. SIPLUS NET variants) (Siemens) Fixed in V5.5.0
Timeline
- 2026-10-02 Threatist record created from CVE-2019-10942
- 2026-10-03 Alias added: GHSA-fw8m-p8g9-xxpf
References
More Siemens Scalance X-200 Firmware vulnerabilities
- TI-2019-04623 The monitor barrier of the affected products insufficiently blocks data from being… CVSS 3.1CRITICAL 9.1
- TI-2018-03425 Cross-site scripting in Siemens SCALANCE X-200 switch family CVSS 3.0MEDIUM 6.1
- TI-2019-04621 Insufficiently protected credentials in Siemens SCALANCE X-200 switch family CVSS 3.1MEDIUM 5.5
Sources
- CVE-2019-10942 · CVE Program
- CVE-2019-10942 · NVD
- FIRST EPSS
- GHSA-fw8m-p8g9-xxpf · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences