What is CVE-2021-25666?

CVE-2021-25666 is a medium-severity vulnerability in Siemens Scalance W740, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 4.3/10. Published 2021-02-09.

How severe is CVE-2021-25666?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Resource exhaustion in Siemens Scalance W740

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.

EPSS: 0.007 (49.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Siemens Scalance_w740
Siemens Scalance_w740_firmware
Siemens Scalance_w780
Siemens Scalance W780 And W740 (Ieee 802.11n) Family — versions All versions < V6.3
Siemens Scalance_w780_firmware

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

productcert@siemens.com (x_refsource_MISC, Vendor Advisory)
productcert@siemens.com (VDB Entry, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-25666?: CVE-2021-25666 is a medium-severity vulnerability in Siemens Scalance W740, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 4.3/10. Published 2021-02-09.
How severe is CVE-2021-25666?: Medium severity. CVSS v3 base score is 4.3 out of 10.