Vulnerability Description
A vulnerability has been identified in SCALANCE W780 and W740 (IEEE 802.11n) family (All versions < V6.3). Sending specially crafted packets through the ARP protocol to an affected device could cause a partial denial-of-service, preventing the device to operate normally for a short period of time.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Siemens | Scalance W780 Firmware | < 6.3 |
| Siemens | Scalance W780 | - |
| Siemens | Scalance W740 Firmware | < 6.3 |
| Siemens | Scalance W740 | - |
Related Weaknesses (CWE)
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-686152.pdfVendor Advisory
- https://us-cert.cisa.gov/ics/advisories/icsa-21-040-07Third Party AdvisoryVDB Entry
- https://cert-portal.siemens.com/productcert/pdf/ssa-686152.pdfVendor Advisory
- https://us-cert.cisa.gov/ics/advisories/icsa-21-040-07Third Party AdvisoryVDB Entry
FAQ
What is CVE-2021-25666?
CVE-2021-25666 is a vulnerability with a CVSS score of 4.3 (MEDIUM). A vulnerability has been identified in SCALANCE W780 and W740 (IEEE 802.11n) family (All versions < V6.3). Sending specially crafted packets through the ARP protocol to an affected device could cause ...
How severe is CVE-2021-25666?
CVE-2021-25666 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-25666?
Check the references section above for vendor advisories and patch information. Affected products include: Siemens Scalance W780 Firmware, Siemens Scalance W780, Siemens Scalance W740 Firmware, Siemens Scalance W740.