CVE-2017-11420
9.8 · CRITICALOverview
CVE-2017-11420 is a critical-severity vulnerability affecting asuswrt-merlin_project rt-ac5300_firmware. It was published on July 18, 2017 and has a CVSS 3.0 base score of 9.8 (CRITICAL).
This vulnerability has a CVSS 3.0 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
Stack-based buffer overflow in ASUS_Discovery.c in networkmap in Asuswrt-Merlin firmware for ASUS devices and ASUS firmware for ASUS RT-AC5300, RT_AC1900P, RT-AC68U, RT-AC68P, RT-AC88U, RT-AC66U, RT-AC66U_B1, RT-AC58U, RT-AC56U, RT-AC55U, RT-AC52U, RT-AC51U, RT-N18U, RT-N66U, RT-N56U, RT-AC3200, RT-AC3100, RT_AC1200GU, RT_AC1200G, RT-AC1200, RT-AC53, RT-N12HP, RT-N12HP_B1, RT-N12D1, RT-N12+, RT_N12+_PRO, RT-N16, and RT-N300 devices allows remote attackers to execute arbitrary code via long device information that is mishandled during a strcat to a device list.
Remediation
Check the references section for vendor advisories and patches from asuswrt-merlin_project. Update rt-ac5300_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| asuswrt-merlin_project | rt-ac5300_firmware | 0 | Affected |
| asuswrt-merlin_project | rt_ac1900p_firmware | 0 | Affected |
| asuswrt-merlin_project | rt-ac68u_firmware | 0 | Affected |
| asuswrt-merlin_project | rt-ac68p_firmware | 0 | Affected |
| asuswrt-merlin_project | rt-ac88u_firmware | 0 | Affected |
| asuswrt-merlin_project | rt-ac66u_firmware | 0 | Affected |
| asuswrt-merlin_project | rt-ac66u_b1_firmware | 0 | Affected |
| asuswrt-merlin_project | rt-ac58u_firmware | 0 | Affected |
| asuswrt-merlin_project | rt-ac56u_firmware | 0 | Affected |
| asuswrt-merlin_project | rt-ac55u_firmware | 0 | Affected |
Frequently Asked Questions
What is CVE-2017-11420?
CVE-2017-11420 is a critical-severity vulnerability affecting asuswrt-merlin_project rt-ac5300_firmware. It was published on July 18, 2017 and has a CVSS 3.0 base score of 9.8 (CRITICAL).
How severe is CVE-2017-11420?
This vulnerability has a CVSS 3.0 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2017-11420?
Check the references section for vendor advisories and patches from asuswrt-merlin_project. Update rt-ac5300_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2017-11420?
CyberStrike's AI-powered security agents can automatically detect CVE-2017-11420 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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