← Vulnerability feed

Vulnerability record · CVE-2022-38546 · published 21 December 2022

CVE-2022-38546: Zyxel nbg7510 firmware improper access control vulnerability

Zyxel · Nbg7510 Firmware

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.

9.8 CVSS 3.1 Critical EPSS 0.64% · top 51.1% CWE-284 · Improper access control
9.8CVSS 3.1 base score
0.64%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-dns-misconfiguration-in-nbg7510- Vendor Advisory
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-dns-misconfiguration-in-nbg7510- Vendor Advisory

Track CVE-2022-38546 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

6.5CVE-2023-37929Zyxel dx3300-t1 firmware classic buffer overflow vulnerabilityThe buffer overflow vulnerability in the CGI program of the VMG3625-T50B firmware version V5.50(ABPM.8)C0 could allow an authenticated remote attacke…EPSS 0.55%5.5CVE-2024-0816Zyxel lte3202-m437 firmware classic buffer overflow vulnerabilityThe buffer overflow vulnerability in the DX3300-T1 firmware version V5.50(ABVY.4)C0 could allow an authenticated local attacker to cause denial of se…EPSS 0.15%10.0CVE-2015-3306ProFTPD mod_copy arbitrary file read and writeThe mod_copy module in ProFTPD 1.3.5 fails to restrict the SITE CPFR and SITE CPTO commands, letting remote attackers copy arbitrary files on the ser…KEVEPSS 99%analysed7.8CVE-2026-81963Windows Update Stack link-following privilege escalationWindows Update Stack resolves links improperly before accessing files, a link-following flaw (CWE-59) compounded by improper access control (CWE-284)…KEVEPSS 0.39%analysed10.0CVE-2026-21962Oracle HTTP Server and WebLogic Proxy Plug-in improper access controlOracle HTTP Server and the WebLogic Server Proxy Plug-in (for Apache HTTP Server and IIS) contain an improper access control flaw (CWE-284) in suppor…KEVEPSS 73%analysed10.0CVE-2026-34908Ubiquiti UniFi OS improper access control allows unauthorized system changesUniFi OS devices contain an improper access control flaw (CWE-284) that lets a network-reachable actor make unauthorized changes to the system. The C…KEVEPSS 15%analysed10.0CVE-2026-48907JCE editor for Joomla allows unauthenticated profile creation and PHP uploadThe JCE editor extension for Joomla permits unauthenticated users to create new editor profiles, which leads to upload and execution of PHP code. Thi…KEVEPSS 16%analysed9.8CVE-2026-35616FortiClientEMS improper access control allows unauthenticated code executionFortinet FortiClientEMS 7.4.5 through 7.4.6 contains an improper access control flaw (CWE-284) that lets an unauthenticated attacker send crafted req…KEVEPSS 9.1%analysed

Source: NIST National Vulnerability Database (record CVE-2022-38546), CISA KEV, FIRST EPSS (scores of 2026-10-11). This page is refreshed as NVD updates the record.