CVE-2021-20863

HIGH

ELECOM routers <1.25 - Command Injection

Title source: llm
STIX 2.1

Description

OS command injection vulnerability in ELECOM routers (WRC-1167GST2 firmware v1.25 and prior, WRC-1167GST2A firmware v1.25 and prior, WRC-1167GST2H firmware v1.25 and prior, WRC-2533GS2-B firmware v1.52 and prior, WRC-2533GS2-W firmware v1.52 and prior, WRC-1750GS firmware v1.03 and prior, WRC-1750GSV firmware v2.11 and prior, WRC-1900GST firmware v1.03 and prior, WRC-2533GST firmware v1.03 and prior, WRC-2533GSTA firmware v1.03 and prior, WRC-2533GST2 firmware v1.25 and prior, WRC-2533GST2SP firmware v1.25 and prior, WRC-2533GST2-G firmware v1.25 and prior, and EDWRC-2533GST2 firmware v1.25 and prior) allows a network-adjacent authenticated attackers to execute an arbitrary OS command with the root privilege via unspecified vectors.

References (2)

Core 2
Core References
Vendor Advisory x_refsource_misc
https://www.elecom.co.jp/news/security/20211130-01/
Third Party Advisory x_refsource_misc
https://jvn.jp/en/vu/JVNVU94527926/index.html

Scores

CVSS v3 8.0
EPSS 0.0086
EPSS Percentile 54.0%
Attack Vector ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-78
Status published
Products (14)
elecom/edwrc-2533gst2_firmware < 1.25
elecom/wrc-1167gst2_firmware < 1.25
elecom/wrc-1167gst2a_firmware < 1.25
elecom/wrc-1167gst2h_firmware < 1.25
elecom/wrc-1750gs_firmware < 1.03
elecom/wrc-1750gsv_firmware < 2.11
elecom/wrc-1900gst_firmware < 1.03
elecom/wrc-2533gs2-b_firmware < 1.52
elecom/wrc-2533gs2-w_firmware < 1.52
elecom/wrc-2533gst2-g_firmware < 1.25
... and 4 more
Published Dec 01, 2021
Tracked Since Feb 18, 2026