What’s Vulnerable › Vulnerabilities

CVE-2022-30526

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-07-19 · updated 2026-06-17
• Weakness: CWE-269

Description

A privilege escalation vulnerability was identified in the CLI command of Zyxel USG FLEX 100(W) firmware versions 4.50 through 5.30, USG FLEX 200 firmware versions 4.50 through 5.30, USG FLEX 500 firmware versions 4.50 through 5.30, USG FLEX 700 firmware versions 4.50 through 5.30, USG FLEX 50(W) firmware versions 4.16 through 5.30, USG20(W)-VPN firmware versions 4.16 through 5.30, ATP series firmware versions 4.32 through 5.30, VPN series firmware versions 4.30 through 5.30, USG/ZyWALL series firmware versions 4.09 through 4.72, which could allow a local attacker to execute some OS commands with root privileges in some directories on a vulnerable device.

Affected products

• Zyxel Atp100 Firmware: from 4.32 through 5.30
• Zyxel Atp100W Firmware: from 4.32 through 5.30
• Zyxel Atp200 Firmware: from 4.32 through 5.30
• Zyxel Atp500 Firmware: from 4.32 through 5.30
• Zyxel Atp700 Firmware: from 4.32 through 5.30
• Zyxel Atp800 Firmware: from 4.32 through 5.30
• Zyxel Usg20-Vpn Firmware: from 4.30 through 5.30
• Zyxel USG20(W)-VPN firmware: from 4.16 through 5.30
• Zyxel Usg40 Firmware: from 4.09 through 4.72
• Zyxel Usg40W Firmware: from 4.09 through 4.72
• Zyxel Usg60 Firmware: from 4.09 through 4.72
• Zyxel Usg60W Firmware: from 4.09 through 4.72
• Zyxel Usg 2200-Vpn Firmware: from 4.30 through 5.30
• Zyxel USG FLEX 100(W) firmware: from 4.50 through 5.30
• Zyxel USG FLEX 200 firmware: from 4.50 through 5.30
• Zyxel USG FLEX 500 firmware: from 4.50 through 5.30
• Zyxel USG FLEX 50(W) firmware: from 4.16 through 5.30
• Zyxel USG FLEX 700 firmware: from 4.50 through 5.30
• Zyxel Vpn1000 Firmware: from 4.30 through 5.30
• Zyxel Vpn100 Firmware: from 4.30 through 5.30
• Zyxel Vpn300 Firmware: from 4.30 through 5.30
• Zyxel Vpn50 Firmware: from 4.30 through 5.30
• Zyxel Zywall 1100 Firmware: from 4.30 through 5.30
• Zyxel Zywall 110 Firmware: from 4.30 through 5.30
• Zyxel Zywall 310 Firmware: from 4.30 through 5.30

References

• http://packetstormsecurity.com/files/168202/Zyxel-Firewall-SUID-Binary-Privilege-Escalation.html
• https://www.zyxel.com/support/Zyxel-security-advisory-authenticated-directory-traversal-vulnerabilities-of-firewalls.shtml
• http://packetstormsecurity.com/files/168202/Zyxel-Firewall-SUID-Binary-Privilege-Escalation.html
• https://www.zyxel.com/support/Zyxel-security-advisory-authenticated-directory-traversal-vulnerabilities-of-firewalls.shtml

Get alerted when CVE-2022-30526 or the next vulnerability affects your stack