{"cve":"CVE-2018-9149","nvd":{"published":"2018-04-01T18:29:00.287","modified":"2026-06-17T02:06:09.787","status":"Modified","description":"The Zyxel Multy X (AC3000 Tri-Band WiFi System) device doesn't use a suitable mechanism to protect the UART. After an attacker dismantles the device and uses a USB-to-UART cable to connect the device, he can use the 1234 password for the root account to login to the system. Furthermore, an attacker can start the device's TELNET service as a backdoor.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":6.8},"cwes":["CWE-798"],"references":["https://www.slideshare.net/secret/qrHwDOJ71eLg7f","https://www.slideshare.net/secret/qrHwDOJ71eLg7f"],"products":["zyxel:ac3000_firmware"],"source":"nvd","synced_at":"2026-10-19T20:49:59.483420567+00:00"},"epss":{"cve":"CVE-2018-9149","score":0.00458,"percentile":0.39724,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}