CVE-2022-30525
Zyxel Multiple Firewalls OS Command Injection Vulnerability
- Published
- May 12, 2022
- Updated
- Oct 21, 2025
- Assigning CNA
- Zyxel
- Evidence observed
- May 16, 2022
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HHigh · next 30 days
- Percentile
- 100.0%
- Model date
- Oct 17, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
CISA Known Exploited
This CVE appears in the CISA Known Exploited Vulnerabilities catalog.
Summary
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.
Sources
modules/exploits/linux/http/zyxel_ztp_rce.rb
Metasploit Framework modulesDeclared conditions
- platform: Linux,Unix($.exploit_linux/http/zyxel_ztp_rce.platform)
- verification: check_declared($.exploit_linux/http/zyxel_ztp_rce.check)
http/cves/2022/CVE-2022-30525.yaml
Nuclei TemplatesDeclared conditions
- network: http($.protocol_keys)
- verification: status,word($.matchers[*].type)
- oob: interactsh_reference($.template_text)
Responsible use
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