CVE-2021-20739

HIGH

Elecom WRC and WRH Routers - Unauthenticated OS Command Injection

Title source: manual
STIX 2.1

Description

WRC-300FEBK, WRC-F300NF, WRC-733FEBK, WRH-300RD, WRH-300BK, WRH-300SV, WRH-300WH, WRH-H300WH, WRH-H300BK, WRH-300BK-S, and WRH-300WH-S all versions allows an unauthenticated network-adjacent attacker to execute an arbitrary OS command via unspecified vectors.

References (2)

Core 2
Core References
Vendor Advisory x_refsource_misc
https://www.elecom.co.jp/news/security/20210706-01/
Third Party Advisory x_refsource_misc
https://jvn.jp/en/vu/JVNVU94260088/index.html

Scores

CVSS v3 8.8
EPSS 0.0051
EPSS Percentile 39.8%
Attack Vector ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-78
Status published
Products (11)
elecom/wrc-300febk_firmware
elecom/wrc-733febk_firmware
elecom/wrc-f300nf_firmware
elecom/wrh-300bk-s_firmware
elecom/wrh-300bk_firmware
elecom/wrh-300rd_firmware
elecom/wrh-300sv_firmware
elecom/wrh-300wh-s_firmware
elecom/wrh-300wh_firmware
elecom/wrh-h300bk_firmware
... and 1 more
Published Jul 07, 2021
Tracked Since Feb 18, 2026