CVE-2022-30525

Confirmed PUBLISHED

A OS command injection vulnerability in the CGI program of Zyxel USG FLEX 100(W) firmware versions 5.00 through 5.21 Patch 1, USG FLEX 200 firmware...

Zyxel · USG FLEX 100(W) firmware, USG FLEX 200 firmware, USG FLEX 500 firmware, USG FLEX 700 firmware, ATP series firmware, VPN series firmware, USG FLEX 50(W) firmware, USG 20(W)-VPN firmware

Exploited in the wild PoC available

Recommended Action

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

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Confidence

Confirmed

Exploitation Status

Exploited in the wild

Observed in Sensors

Attempts (30d)

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Unique Attacker IPs

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CISA KEV

In CISA KEV

CVSS / EPSS

9.8 Critical EPSS 99.9%

At a Glance

A OS command injection vulnerability in the CGI program of Zyxel USG FLEX 100(W) firmware versions 5.00 through 5.21 Patch 1, USG FLEX 200 firmware versions 5.00 through 5.21 Patch 1, USG FLEX 500 firmware versions 5.00 through 5.21 Patch 1, USG FLEX 700 firmware versions 5.00 through 5.21 Patch 1, USG FLEX 50(W) firmware versions 5.10 through 5.21 Patch 1, USG20(W)-VPN firmware versions 5.10 through 5.21 Patch 1, ATP series firmware versions 5.10 through 5.21 Patch 1, VPN series firmware versions 4.60 through 5.21 Patch 1, which could allow an attacker to modify specific files and then execute some OS commands on a vulnerable device.

nuclei_scanner edge metasploit cisa

CVE Published: May 12, 2022
Exploitation Reported: May 16, 2022
CVSS: 9.8 Critical
EPSS: 99.9%

Remote Low complexity No user interaction Unauthenticated

Affected Versions

Vendor	Product	Version	Status
Zyxel	USG FLEX 100(W) firmware	5.00 through 5.21 Patch 1	Affected
Zyxel	USG FLEX 200 firmware	5.00 through 5.21 Patch 1	Affected
Zyxel	USG FLEX 500 firmware	5.00 through 5.21 Patch 1	Affected
Zyxel	USG FLEX 700 firmware	5.00 through 5.21 Patch 1	Affected
Zyxel	ATP series firmware	5.10 through 5.21 Patch 1	Affected
Zyxel	VPN series firmware	4.60 through 5.21 Patch 1	Affected
Zyxel	USG FLEX 50(W) firmware	5.10 through 5.21 Patch 1	Affected
Zyxel	USG 20(W)-VPN firmware	5.10 through 5.21 Patch 1	Affected

CVE References

zyxel.com/support/Zyxel-security-advisory-for-OS-comma... zyxel.com · CVE Record https://www.zyxel.com/support/Zyxel-security-advisory-for-OS-command-...
packetstormsecurity.com/files/167176/Zyxel-Remote-Command-Execution.... packetstormsecurity.com · CVE Record http://packetstormsecurity.com/files/167176/Zyxel-Remote-Command-Exec...
packetstormsecurity.com/files/167182/Zyxel-Firewall-ZTP-Unauthentica... packetstormsecurity.com · CVE Record http://packetstormsecurity.com/files/167182/Zyxel-Firewall-ZTP-Unauth...
packetstormsecurity.com/files/167372/Zyxel-USG-FLEX-5.21-Command-Inj... packetstormsecurity.com · CVE Record http://packetstormsecurity.com/files/167372/Zyxel-USG-FLEX-5.21-Comma...
packetstormsecurity.com/files/168202/Zyxel-Firewall-SUID-Binary-Priv... packetstormsecurity.com · CVE Record http://packetstormsecurity.com/files/168202/Zyxel-Firewall-SUID-Binar...

Recommended Actions

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
Check enrichment artifacts for scanner coverage and available PoCs before rolling remediation validation.
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Known Exploited Vulnerability Sources

Catalogues that list this CVE as a known exploited vulnerability.

Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.

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Source	Added
CISA First	2022-05-16 00:00 UTC
The Shadowserver	2026-07-08 00:00 UTC

Scanner Artifacts

Nuclei and Metasploit references linked to this CVE.

Scanner	Reference	Detected
Nuclei	https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2022/CVE-2022-30525.yaml	Apr 25, 2025
Metasploit	https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/http/zyxel_ztp_rce.rb	Apr 28, 2025

CVSS Scores

CVSS v3.1 9.8 Critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 10.0 High

AV:N/AC:L/Au:N/C:C/I:C/A:C

Exploitation Status

Exploited in the wild

Recorded 2022-05-16 00:00:00 UTC · CISA

Proof of concept available

Recorded 2022-05-13 12:03:28 UTC · GitHub

Weaknesses (CWE)

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Scanner Integrations

Scanner	Reference	Detected
Metasploit	https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/http/zyxel_ztp_rce.rb	Apr 28, 2025
Nuclei	https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2022/CVE-2022-30525.yaml	Apr 25, 2025

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

cbk914/CVE-2022-30525_check

github · Created 2023-01-15 20:02:24 UTC · 2 stars

west9b/CVE-2022-30525

github · Created 2022-05-28 07:19:31 UTC · 12 stars

CVE-2022-30525 Zyxel 防火墙命令注入漏洞 POC&EXPC

Chocapikk/CVE-2022-30525-Reverse-Shell

github · Created 2022-05-18 15:22:17 UTC · 2 stars

Simple python script to exploit CVE-2022-30525 (FIXED): Zyxel Firewall Unauthenticated Remote Command Injection

k0sf/CVE-2022-30525

github · Created 2022-05-16 04:45:43 UTC · 3 stars

CVE-2022-30525（Zxyel 防火墙命令注入）的概念证明漏洞利用

savior-only/CVE-2022-30525

github · Created 2022-05-13 18:16:31 UTC · 4 stars

Zyxel 防火墙未经身份验证的远程命令注入

shuai06/CVE-2022-30525

github · Created 2022-05-13 12:58:43 UTC · 33 stars

Zyxel 防火墙远程命令注入漏洞（CVE-2022-30525）批量检测脚本

Henry4E36/CVE-2022-30525

github · Created 2022-05-13 12:03:28 UTC · 22 stars

Zyxel 防火墙远程命令注入漏洞（CVE-2022-30525）

Zyxel Firewall - OS Command Injection

nuclei · Created Unknown

zyxel_ztp_rce

metasploit · Created Unknown

Metasploit module for CVE-2022-30525

Automate This Intelligence with the Pro API

Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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Pro API Example

GET /api/v2/pro/kevs/CVE-2022-30525

{
  "cve_id": "CVE-2022-30525",
  "title": "A OS command injection vulnerability in the CGI program of Zyxel USG FLEX 100...",
  "affected_vendor": "Zyxel",
  "affected_product": "USG FLEX 100(W) firmware, USG FLEX 200 firmware, USG FLEX 500 firmware, USG FLEX 700 firmware, ATP series firmware, VPN series firmware, USG FLEX 50(W) firmware, USG 20(W)-VPN firmware",
  "affected_versions": [
    { "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
  ],
  "confidence": "Confirmed",
  "cvss_score": 9.8,
  "epss_score": 0.99938,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "...": "Pro API fields" },
  "proof_of_concepts": [ "..." ],
  "scanner_integrations": [ "..." ]
}

The free JSON API returns basic KEV fields only. Confidence, telemetry, and artifact enrichment require Pro API access.

CVE-2022-30525

At a Glance

Affected Versions

CVE References

Recommended Actions

Known Exploited Vulnerability Sources

Scanner Artifacts

Virtual Patch

CVSS Scores

Exploitation Status

Weaknesses (CWE)

Scanner Integrations

Potential Proof of Concepts

Timeline

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