CVE-2021-25666

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.

Category

4.3
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.09%
Vendor Advisory siemens.com
Affected: Siemens SCALANCE W780 and W740 (IEEE 802.11n) family
Published at:
Updated at:

References

Link Tags
https://cert-portal.siemens.com/productcert/pdf/ssa-686152.pdf vendor advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-040-07 third party advisory vdb entry

Frequently Asked Questions

What is the severity of CVE-2021-25666?
CVE-2021-25666 has been scored as a medium severity vulnerability.
How to fix CVE-2021-25666?
To fix CVE-2021-25666, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-25666 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-25666 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-25666?
CVE-2021-25666 affects Siemens SCALANCE W780 and W740 (IEEE 802.11n) family.
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