#VU70458 Improper Authorization in NBG7510 - CVE-2022-38546

Vulnerability identifier: #VU70458

Vulnerability risk: Medium

CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

CVE-ID: CVE-2022-38546

CWE-ID: CWE-285

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
NBG7510

Software vendor:
ZyXEL Communications Corp.

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to a DNS misconfiguration. A remote non-authenticated attacker can perform DNS-related attacks, such as DNS tunneling or DNS amplification attacks, by using the open DNS resolver when the device is switched to the AP mode.

Install updates from vendor's website.

• https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-dns-misconfiguration-in-nbg7510-home-router