Command Injection in Ruijie Networks Ruijie RG-EW Series Routers (CVE-2021-43160)
Summary
Command injection in Ruijie Networks Ruijie RG-EW Series Routers (CVE-2021-43160). Successful exploitation can lead to full system takeover.
Original description
The description as published by the source.
A Remote Code Execution (RCE) vulnerability exists in Ruijie Networks Ruijie RG-EW Series Routers up to ReyeeOS 1.55.1915 / EW_3.0(1)B11P55 via the switchFastDhcp function in /cgi-bin/luci/api/diagnose.
Source: NIST National Vulnerability Database NVD
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2021-43160 has been found in Ruijie Networks Ruijie RG-EW Series Routers.
Successful exploitation can lead to full system takeover. CVSS score: 8.8/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Ruijie Networks Ruijie RG-EW Series Routers CVE-2021-43160" on the vendor's site.
CVE-2021-43160 (Ruijie Networks Ruijie RG-EW Series Routers) — CWE-77 / CVSS v3 8.8
Attack vector: remote (network-reachable) / no user interaction
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-77) exists in Ruijie Networks Ruijie RG-EW Series Routers.
Check the vendor advisory for the affected versions of Ruijie Networks Ruijie RG-EW Series Routers.
Severity: High (CVSS 8.8/10). Successful exploitation can lead to full system takeover.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで Ruijie Networks Ruijie RG-EW Series Routers を使っているサービスとバージョンを洗い出す。
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2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
References
- advisory seclists.org
- web ruijie.com