CVE-2021-25666

MEDIUM

SCALANCE W780 and W740 Firmware < 6.3 - Denial of Service via ARP Packet Crafting

Title source: llm
STIX 2.1

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.

References (2)

Core 2
Core References
Third Party Advisory, VDB Entry x_refsource_misc
https://us-cert.cisa.gov/ics/advisories/icsa-21-040-07

Scores

CVSS v3 4.3
EPSS 0.0007
EPSS Percentile 21.8%
Attack Vector ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Details

CWE
CWE-770
Status published
Products (2)
siemens/scalance_w740_firmware < 6.3
siemens/scalance_w780_firmware < 6.3
Published Feb 09, 2021
Tracked Since Feb 18, 2026