AUGUST 4, 2026
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Case File

CVE-2021-20863

HIGH · CVSS 8 EPSS 0.86%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-12-01 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 8.0. Exploitation may require the attacker to be authenticated.

CVE
CVE-2021-20863
Severity
HIGH
CVSS
8
EPSS
0.86%

Original NVD 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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)