Vulnerability Description
A vulnerability has been identified in SIMATIC RF166C (All versions > V1.1 and < V1.3.2), SIMATIC RF185C (All versions > V1.1 and < V1.3.2), SIMATIC RF186C (All versions > V1.1 and < V1.3.2), SIMATIC RF186CI (All versions > V1.1 and < V1.3.2), SIMATIC RF188C (All versions > V1.1 and < V1.3.2), SIMATIC RF188CI (All versions > V1.1 and < V1.3.2), SIMATIC RF360R (All versions < V2.0), SIMATIC Reader RF610R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF610R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF610R FCC (All versions > V3.0 < V4.0), SIMATIC Reader RF615R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF615R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF615R FCC (All versions > V3.0 < V4.0), SIMATIC Reader RF650R ARIB (All versions > V3.0 < V4.0), SIMATIC Reader RF650R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF650R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF650R FCC (All versions > V3.0 < V4.0), SIMATIC Reader RF680R ARIB (All versions > V3.0 < V4.0), SIMATIC Reader RF680R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF680R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF680R FCC (All versions > V3.0 < V4.0), SIMATIC Reader RF685R ARIB (All versions > V3.0 < V4.0), SIMATIC Reader RF685R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF685R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF685R FCC (All versions > V3.0 < V4.0). Affected devices do not properly handle large numbers of incoming connections. An attacker may leverage this to cause a Denial-of-Service situation.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Siemens | Simatic Rf166C Firmware | < 1.3.2 |
| Siemens | Simatic Rf166C | - |
| Siemens | Simatic Rf185C Firmware | < 1.3.2 |
| Siemens | Simatic Rf185C | - |
| Siemens | Simatic Rf186C Firmware | < 1.3.2 |
| Siemens | Simatic Rf186C | - |
| Siemens | Simatic Rf186Ci Firmware | < 1.3.2 |
| Siemens | Simatic Rf186Ci | - |
| Siemens | Simatic Rf188C Firmware | < 1.3.2 |
| Siemens | Simatic Rf188C | - |
| Siemens | Simatic Rf188Ci Firmware | < 1.3.2 |
| Siemens | Simatic Rf188Ci | - |
| Siemens | Simatic Rf360R Firmware | < 2.0 |
| Siemens | Simatic Rf360R | - |
| Siemens | Simatic Reader Rf610R Cmiit Firmware | >= 3.0, < 4.0 |
| Siemens | Simatic Reader Rf610R Cmiit | - |
| Siemens | Simatic Reader Rf610R Etsi Firmware | >= 3.0, < 4.0 |
| Siemens | Simatic Reader Rf610R Etsi | - |
| Siemens | Simatic Reader Rf610R Fcc Firmware | >= 3.0, < 4.0 |
| Siemens | Simatic Reader Rf610R Fcc | - |
Related Weaknesses (CWE)
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-787292.pdfMitigationPatchVendor Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-787292.pdfMitigationPatchVendor Advisory
FAQ
What is CVE-2021-31340?
CVE-2021-31340 is a vulnerability with a CVSS score of 7.5 (HIGH). A vulnerability has been identified in SIMATIC RF166C (All versions > V1.1 and < V1.3.2), SIMATIC RF185C (All versions > V1.1 and < V1.3.2), SIMATIC RF186C (All versions > V1.1 and < V1.3.2), SIMATIC ...
How severe is CVE-2021-31340?
CVE-2021-31340 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-31340?
Check the references section above for vendor advisories and patch information. Affected products include: Siemens Simatic Rf166C Firmware, Siemens Simatic Rf166C, Siemens Simatic Rf185C Firmware, Siemens Simatic Rf185C, Siemens Simatic Rf186C Firmware.