CVE-2022-30525
Zyxel · published 2022-05-12
Source record Collected from the National Vulnerability Database (NVD)
CISA Known Exploited Vulnerabilities
CISA lists this CVE as known exploited (added 2022-05-16).
- CISA's name for it: Zyxel Multiple Firewalls OS Command Injection Vulnerability
- CISA's description: 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.
- Known ransomware campaign use, per CISA: Unknown
Source: CISA KEV catalog (CC0 1.0).
Description
Description by Zyxel Corporation via the CVE Program.
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.
Status at the source
- NVD status: Analyzed
Affected products, as the source lists them
| Vendor | Product | Versions |
|---|---|---|
| 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 |
Products named in NVD's CPE match criteria (16)
cpe:2.3:o:zyxel:usg_flex_100w_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:usg_flex_200_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:usg_flex_500_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:usg_flex_700_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:vpn100_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:vpn1000_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:vpn300_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:vpn50_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:atp100_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:atp100w_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:atp200_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:atp500_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:atp700_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:atp800_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:usg_flex_50w_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:zyxel:usg20w-vpn_firmware:*:*:*:*:*:*:*:*
DeSpy has not checked any unit, hardware revision or firmware. A product missing here is not a statement that it is unaffected.
Scores, as their sources published them
- CVSS 3.1: 9.8 CRITICAL — as published by Zyxel Corporation (Secondary)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 3.1: 9.8 CRITICAL — as published by NIST (Primary)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0: 10 HIGH — as published by NIST (Primary)
AV:N/AC:L/Au:N/C:C/I:C/A:C - SSVC — CISA's assessment (SSVC 2.0.3, CISA Coordinator): Exploitation: active · Automatable: yes · Technical impact: total
DeSpy does not score records. These are the sources' own values.
Weaknesses
Sources
References the source lists
- http://packetstormsecurity.com/files/167176/Zyxel-Remote-Command-Execution.html
- http://packetstormsecurity.com/files/167182/Zyxel-Firewall-ZTP-Unauthenticated-Command-Injection.html
- http://packetstormsecurity.com/files/167372/Zyxel-USG-FLEX-5.21-Command-Injection.html
- http://packetstormsecurity.com/files/168202/Zyxel-Firewall-SUID-Binary-Privilege-Escalation.html
- https://www.zyxel.com/support/Zyxel-security-advisory-for-OS-command-injection-vulnerability-of-firewalls.shtml
- http://packetstormsecurity.com/files/167176/Zyxel-Remote-Command-Execution.html
- http://packetstormsecurity.com/files/167182/Zyxel-Firewall-ZTP-Unauthenticated-Command-Injection.html
- http://packetstormsecurity.com/files/167372/Zyxel-USG-FLEX-5.21-Command-Injection.html
- http://packetstormsecurity.com/files/168202/Zyxel-Firewall-SUID-Binary-Privilege-Escalation.html
- https://www.zyxel.com/support/Zyxel-security-advisory-for-OS-command-injection-vulnerability-of-firewalls.shtml
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-30525
Source dates: published 2022-05-12, last changed 2026-06-17. DeSpy's copy of this version is dated 2026-09-28.
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