Vulnerability Details : CVE-2021-25666
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.
Vulnerability category: Denial of service
Products affected by CVE-2021-25666
- cpe:2.3:o:siemens:scalance_w780_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:scalance_w740_firmware:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-25666
0.06%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 26 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-25666
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
3.3
|
LOW | AV:A/AC:L/Au:N/C:N/I:N/A:P |
6.5
|
2.9
|
NIST | |
4.3
|
MEDIUM | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
2.8
|
1.4
|
NIST |
CWE ids for CVE-2021-25666
-
The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.Assigned by: productcert@siemens.com (Primary)
References for CVE-2021-25666
-
https://cert-portal.siemens.com/productcert/pdf/ssa-686152.pdf
Vendor Advisory
-
https://us-cert.cisa.gov/ics/advisories/icsa-21-040-07
Siemens SCALANCE W780 and W740 | CISAThird Party Advisory;VDB Entry
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