CVE-2022-38546

MEDIUMNVD 5.39.8▲

5.3

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.

CVSS v3: 5.3
EG Score: 9.8(medium)
EPSS: 52.9%
KEV: Not listed

Published

December 21, 2022

Last Modified

November 21, 2024

References (2)

security@zyxelhttps://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-dns-misconfiguration-in-nbg7510-home-router
af854a3a-2127-422b-91ae-364da2661108https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-dns-misconfiguration-in-nbg7510-home-router

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-284Improper Access Control

Data Freshness Timeline

(refreshed 13× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-04 13:11 UTCepss_batch
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2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2022-38546?

CVE-2022-38546 is a medium vulnerability published on December 21, 2022. 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.

When was CVE-2022-38546 disclosed?

CVE-2022-38546 was first published in the National Vulnerability Database on December 21, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2022-38546 actively exploited?

CVE-2022-38546 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 52.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2022-38546?

CVE-2022-38546 has a CVSS v3 base score of 5.3 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.8.

How do I remediate CVE-2022-38546?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-38546, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2022-38546

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2022-38546?

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Published

Last Modified

References (2)

Frequently asked(5)

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