What is CVE-2022-38546?

CVE-2022-38546 is a medium-severity vulnerability in Zyxel Nbg7510, classified under Improper Access Control. CVSS score: 5.3/10. Published 2022-12-21.

How severe is CVE-2022-38546?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Zyxel Nbg7510

CVE-2022-38546

A DNS misconfiguration was found in Zyxel NBG7510 firmware versions prior to V1.00(ABZY.3)C0, which could allow an unauthenticated attacker to access the DNS server when the device is switched to the AP mode.

Published 2022-12-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.006 (47.5th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Zyxel Nbg7510
Zyxel Nbg7510 Firmware — versions < V1.00(ABZY.3)C0
Zyxel Nbg7510 Firmware

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for… (Vendor Advisory)

Frequently asked questions

What is CVE-2022-38546?: CVE-2022-38546 is a medium-severity vulnerability in Zyxel Nbg7510, classified under Improper Access Control. CVSS score: 5.3/10. Published 2022-12-21.
How severe is CVE-2022-38546?: Medium severity. CVSS v3 base score is 5.3 out of 10.