What is CVE-2018-9149?

CVE-2018-9149 is a medium-severity vulnerability in Zyxel Ac3000, classified under Use of Hard-coded Credentials. CVSS score: 6.8/10. Published 2018-04-01.

How severe is CVE-2018-9149?

Medium severity. CVSS v3 base score is 6.8 out of 10.

Vulnerability in Zyxel Ac3000

CVE-2018-9149

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.

EPSS: 0.005 (38.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Zyxel Ac3000
Zyxel Ac3000_firmware
N/a — versions n/a

Weakness classification (CWE)

CWE-798 — Use of Hard-coded Credentials

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2018-9149?: CVE-2018-9149 is a medium-severity vulnerability in Zyxel Ac3000, classified under Use of Hard-coded Credentials. CVSS score: 6.8/10. Published 2018-04-01.
How severe is CVE-2018-9149?: Medium severity. CVSS v3 base score is 6.8 out of 10.