{"id":"CVE-2022-30525","aliases":["EUVD-2022-52385","GHSA-987m-9prq-3p7m"],"status":"published","title":"A OS command injection vulnerability in the CGI program of Zyxel USG FLEX 100(W) firmware...","description":"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.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.99944,"percentile":0.99973,"model":"v2026.06.15"},"facts":{"in_kev":true,"known_exploited":true,"public_exploit":true,"fix_available":false},"cwes":["CWE-78"],"published":"2022-05-12T13:05:11Z","modified":"2026-06-17T04:43:46Z","kev":{"date_added":"2022-05-16","due_date":"2022-06-06","required_action":"Apply updates per vendor instructions.","known_ransomware_use":"Unknown"},"exploitation":[{"source":"euvd","since":"2022-05-16"},{"source":"kev","since":"2022-05-16"}],"exploits":[{"source":"metasploit","id":"exploit/linux/http/zyxel_ztp_rce","title":"Zyxel Firewall ZTP Unauthenticated Command 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Entry"]},{"url":"http://packetstormsecurity.com/files/167182/Zyxel-Firewall-ZTP-Unauthenticated-Command-Injection.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","VDB Entry"]},{"url":"http://packetstormsecurity.com/files/167372/Zyxel-USG-FLEX-5.21-Command-Injection.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","VDB Entry"]},{"url":"http://packetstormsecurity.com/files/168202/Zyxel-Firewall-SUID-Binary-Privilege-Escalation.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-30525","tags":["government-resource","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-30525"},{"url":"https://github.com/advisories/GHSA-987m-9prq-3p7m"}],"sources":{"cve":[{"id":"CVE-2022-30525","description":"A OS command injection vulnerability in the CGI program of Zyxel USG FLEX 100(W) firmware 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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.","status":"published","published":"2022-05-12T13:05:11Z","modified":"2025-10-21T23:15:39Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"exploited_since":"2022-05-16","updated_at":"2026-11-02T20:31:26.48918Z"}],"ghsa":[{"id":"GHSA-987m-9prq-3p7m","title":"A OS command injection vulnerability in the CGI program of Zyxel USG FLEX 100(W) firmware...","description":"A OS command injection 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