What’s Vulnerable › Vulnerabilities

CVE-2018-9285

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-04-04 · updated 2026-06-17
• Weakness: CWE-78

Description

Main_Analysis_Content.asp in /apply.cgi on ASUS RT-AC66U, RT-AC68U, RT-AC86U, RT-AC88U, RT-AC1900, RT-AC2900, and RT-AC3100 devices before 3.0.0.4.384_10007; RT-N18U devices before 3.0.0.4.382.39935; RT-AC87U and RT-AC3200 devices before 3.0.0.4.382.50010; and RT-AC5300 devices before 3.0.0.4.384.20287 allows OS command injection via the pingCNT and destIP fields of the SystemCmd variable.

Affected products

• ASUS Rt-Ac1900 Firmware: before 3.0.0.4.384.10007 — fixed in 3.0.0.4.384.10007
• ASUS Rt-Ac2900 Firmware: before 3.0.0.4.384.10007 — fixed in 3.0.0.4.384.10007
• ASUS Rt-Ac3100 Firmware: before 3.0.0.4.384.10007 — fixed in 3.0.0.4.384.10007
• ASUS Rt-Ac3200 Firmware: before 3.0.0.4.382.50010 — fixed in 3.0.0.4.382.50010
• ASUS Rt-Ac5300 Firmware: before 3.0.0.4.384.20287 — fixed in 3.0.0.4.384.20287
• ASUS Rt-Ac66U Firmware: before 3.0.0.4.384.10007 — fixed in 3.0.0.4.384.10007
• ASUS Japan Inc. RT-AC68U: before 3.0.0.4.384.10007 — fixed in 3.0.0.4.384.10007
• ASUS RT-AC86U: before 3.0.0.4.384.10007 — fixed in 3.0.0.4.384.10007
• ASUSTeK COMPUTER INC. RT-AC87U: before 3.0.0.4.382.50010 — fixed in 3.0.0.4.382.50010
• ASUS Rt-Ac88U Firmware: before 3.0.0.4.384.10007 — fixed in 3.0.0.4.384.10007
• ASUS Rt-N18U Firmware: before 3.0.0.4.382.39935 — fixed in 3.0.0.4.382.39935

How to fix

Upgrade to a fixed version: ASUS Rt-Ac1900 Firmware 3.0.0.4.384.10007; ASUS Rt-Ac2900 Firmware 3.0.0.4.384.10007; ASUS Rt-Ac3100 Firmware 3.0.0.4.384.10007; ASUS Rt-Ac3200 Firmware 3.0.0.4.382.50010; ASUS Rt-Ac5300 Firmware 3.0.0.4.384.20287; ASUS Rt-Ac66U Firmware 3.0.0.4.384.10007; ASUS Japan Inc. RT-AC68U 3.0.0.4.384.10007; ASUS RT-AC86U 3.0.0.4.384.10007; ASUSTeK COMPUTER INC. RT-AC87U 3.0.0.4.382.50010; ASUS Rt-Ac88U Firmware 3.0.0.4.384.10007; ASUS Rt-N18U Firmware 3.0.0.4.382.39935. Check the vendor advisory for mitigations.

References

• http://packetstormsecurity.com/files/160049/ASUS-TM-AC1900-Arbitrary-Command-Execution.html
• https://fortiguard.com/zeroday/FG-VD-17-216
• https://www.fortinet.com/blog/threat-research/fortiguard-labs-discovers-vulnerability-in-asus-router.html
• http://packetstormsecurity.com/files/160049/ASUS-TM-AC1900-Arbitrary-Command-Execution.html
• https://fortiguard.com/zeroday/FG-VD-17-216
• https://www.fortinet.com/blog/threat-research/fortiguard-labs-discovers-vulnerability-in-asus-router.html

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