CVE-2022-30525

A OS command injection vulnerability in the CGI program of Zyxel USG FLEX 100(W) firmware...

9.8 CriticalIn KEVPublic exploit

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

99.9%Up 98.9 points since May 13, 2022

What each source reports

CVE List Score used 9.8

Record: CVE-2022-30525
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-78
Updated: 2026-11-02

EUVDEUVD-2022-52385 9.8

Record: EUVD-2022-52385
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-987m-9prq-3p7m 9.8

A OS command injection vulnerability in the CGI program of Zyxel USG FLEX 100(W) firmware...

Record: GHSA-987m-9prq-3p7m
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-78
Updated: 2026-11-02

CISA KEV No score

Zyxel Multiple Firewalls OS Command Injection Vulnerability

A command injection vulnerability in the CGI program of some Zyxel firewall versions could allow an attacker to modify specific files and then execute some OS commands on a vulnerable device.

Record: CVE-2022-30525
Weakness: CWE-78
Updated: 2026-11-02

NVD 9.8

Record: CVE-2022-30525
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 10.0 HighAV:N/AC:L/Au:N/C:C/I:C/A:C
Weakness: CWE-78
Updated: 2026-11-02

Affected products

Show 10 moreShow less

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Metasploit	Zyxel Firewall ZTP Unauthenticated Command Injection	2022-04-28
PoC in GitHub	jbaines-r7/victorian_machinery	2022-05-10
PoC in GitHub	Henry4E36/CVE-2022-30525	2022-05-13
PoC in GitHub	savior-only/CVE-2022-30525	2022-05-13
PoC in GitHub	shuai06/CVE-2022-30525	2022-05-13
PoC in GitHub	M4fiaB0y/CVE-2022-30525	2022-05-15
PoC in GitHub	k0sf/CVE-2022-30525	2022-05-16
PoC in GitHub	superzerosec/CVE-2022-30525	2022-05-16
PoC in GitHub	Chocapikk/CVE-2022-30525-Reverse-Shell	2022-05-18
PoC in GitHub	iveresk/cve-2022-30525	2022-05-23

Show 7 moreShow less

Public exploits
Source	Link	Date
PoC in GitHub	west9b/CVE-2022-30525	2022-05-28
Exploit-DB	Zyxel USG FLEX 5.21 - OS Command Injection	2022-06-03
PoC in GitHub	furkanzengin/CVE-2022-30525	2022-06-12
PoC in GitHub	ProngedFork/CVE-2022-30525	2022-06-13
PoC in GitHub	cbk914/CVE-2022-30525_check	2023-01-15
PoC in GitHub	arajsingh-infosec/CVE-2022-30525_Exploit	2024-02-27
Nuclei	Zyxel Firewall - OS Command Injection

History

History
Recorded	Changed	Sources
Nov 3, 2026	exploitation, exploits
Nov 2, 2026	first indexed	CVE List, EUVD, Exploit-DB, GitHub Advisories, CISA KEV, Metasploit, Nuclei, NVD, PoC in GitHub

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2022-30525 is a critical vulnerability (CVSS 9.8) in Zyxel Atp Series Firmware, published May 12, 2022. CISA lists it as known to be exploited, since May 16, 2022. EUVD reports exploitation since May 16, 2022. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 99.9%, the 99th percentile. No source names a fixed version.