CVE-2021-25666
low-risk
Published 2021-02-09
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.
Do I need to act?
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0.07% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.3/10
Medium
ADJACENT_NETWORK
/ LOW complexity
Affected Products (2)
Scalance W780 Firmware
Scalance W740 Firmware
Affected Vendors
References (4)
Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-686152.pdf
Third Party Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-040-07
Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-686152.pdf
Third Party Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-040-07
22
/ 100
low-risk
Severity
15/34 · Moderate
Exploitability
0/34 · Minimal
Exposure
7/34 · Low