---
id: "CVE-2020-10221"
kind: "vulnerability"
aliases: ["CVE-2020-10221"]
title: "rConfig rConfig: rConfig OS Command Injection Vulnerability"
severity: "critical"
cvss: 9.0
epss: 0.77123
exploited: true
status: "open"
category: "other"
products: [{"name": "rConfig rConfig", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["exploited", "other", "php", "rconfig", "self-hosted"]
not_affected_if: ["unknown"]
published_at: "2020-03-08T22:15:11+00:00"
first_seen_at: "2026-10-23T19:11:53+00:00"
updated_at: "2026-10-23T21:57:34+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2020-10221", "first_seen_at": "2026-10-23T19:11:53+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2020-10221", "first_seen_at": "2026-10-23T19:13:43+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-10221", "first_seen_at": "2026-10-23T21:57:34+00:00"}]
---

# rConfig rConfig: rConfig OS Command Injection Vulnerability

rConfig, a network device configuration management tool, has a PHP file that passes the fileName POST parameter to a shell without sanitizing it. A remote attacker can inject shell metacharacters to run arbitrary OS commands on the server.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:rConfig rConfig affected ? fixed ?

## Fix

Apply the vendor update per CISA guidance; the fixed version is unknown from the sources.

## Timeline

- 2026-10-23T19:11:53+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2020-10221
- 2026-10-23T19:13:43+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2020-10221
- 2026-10-23T21:57:34+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2020-10221

## From the sources

rConfig lib/ajaxHandlers/ajaxAddTemplate.php contains an OS command injection vulnerability that allows remote attackers to execute OS commands via shell metacharacters in the fileName POST parameter.

CISA required action: Apply updates per vendor instructions.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_