Security advisories

PSIRT Policy

The Zyxel Product Security Incident Response Team (PSIRT) responds to vulnerability reports, investigates the reported vulnerabilities, and implements the best course of action to protect our customers. We help you build trust with your customers by making network security our highest priority. It’s what drives us to deliver timely, actionable advice on emerging vulnerabilities. Zyxel is authorized as a CVE Numbering Authority (CNA). This recognizes our commitment to security disclosures and a continuous enhancement of vulnerability reporting.

Report Vulnerability

If you have discovered a security vulnerability in Zyxel products, we appreciate your help in reporting it to us in a responsible manner. Our PSIRT will respond and coordinate a patch to protect your subscribers before any opportunists exploit the issue.

Please include the following information when you report a security vulnerability.

Affected model(s) and firmware/software version(s)
Vulnerability description and potential impacts
Step-by-step instructions to reproduce the issue
Proof-of-concept (PoC) or exploit code for the issue
Any suggested solutions to fix this (Optional)
Weakness enumeration (e.g. CWE) (Optional)
Severity (e.g. CVSS v3.x) (Optional)

Note: Zyxel does not have a security bug bounty program for reported vulnerabilities.

Report a security vulnerability Download PGP Public Key

Advisories

PSIRT Policy

The Zyxel Product Security Incident Response Team (PSIRT) responds to vulnerability reports, investigates the reported vulnerabilities, and implements the best course of action to protect our customers. We help you build trust with your customers by making network security our highest priority. It’s what drives us to deliver timely, actionable advice on emerging vulnerabilities. Zyxel is authorized as a CVE Numbering Authority (CNA). This recognizes our commitment to security disclosures and a continuous enhancement of vulnerability reporting.

Report Vulnerability

If you have discovered a security vulnerability in Zyxel products, we appreciate your help in reporting it to us in a responsible manner. Our PSIRT will respond and coordinate a patch to protect your subscribers before any opportunists exploit the issue.

Please include the following information when you report a security vulnerability.

Affected model(s) and firmware/software version(s)
Vulnerability description and potential impacts
Step-by-step instructions to reproduce the issue
Proof-of-concept (PoC) or exploit code for the issue
Any suggested solutions to fix this (Optional)
Weakness enumeration (e.g. CWE) (Optional)
Severity (e.g. CVSS v3.x) (Optional)

Note: Zyxel does not have a security bug bounty program for reported vulnerabilities.

Report a security vulnerability Download PGP Public Key

Advisories

Zyxel security advisory for buffer overflow and post-authentication command injection vulnerabilities in some 4G LTE/5G NR CPE, DSL/Ethernet CPE, fiber ONTs, and Wi-Fi extenders

Zyxel security advisory for post-authentication memory corruption vulnerabilities in some DSL/Ethernet CPE, fiber ONT, and Wi-Fi extender versions

Zyxel security advisory for buffer overflow vulnerabilities in some 5G NR CPE, DSL/Ethernet CPE, fiber ONT, and Wi-Fi extender devices

Zyxel security advisory for buffer overflow vulnerabilities in some 5G NR/4G LTE CPE, DSL/Ethernet CPE, fiber ONT, and Wi-Fi extender devices

Zyxel security advisory for command injection vulnerability in EMG2926-Q10A Ethernet CPE

Zyxel security advisory for command injection vulnerability in P660HN-T1A DSL CPE

Zyxel security advisory for security misconfiguration vulnerability of 4G LTE indoor routers

Zyxel security advisory for cleartext storage of Wi-Fi credentials and improper symbolic links of FTP for AX7501-B0 CPE

Zyxel security advisory for command injection and buffer overflow vulnerabilities of CPE, fiber ONTs, and Wi-Fi extenders

Zyxel security advisory for DoS vulnerability of switches

Zyxel security advisory for cleartext storage of information vulnerability

Zyxel security advisory for buffer overflow vulnerability in Realtek eCos SDK

Zyxel security advisory for OS command injection and buffer overflow vulnerabilities of CPE and ONTs

Zyxel security advisory for multiple vulnerabilities

Zyxel security advisory for Apache Log4j RCE vulnerabilities

Zyxel security advisory for Wi-Fi simple config buffer overflow vulnerabilities

Zyxel security advisory for FragAttacks against Wi-Fi products

Zyxel security advisory for CGI vulnerability of LTE

Zyxel security advisory for DNSpooq

Zyxel security advisory for remote code execution and denial-of-service vulnerabilities of CPE

Zyxel security advisory for a new variant of Gafgyt malware

Zyxel security advisory for P1302-T10D v3 modem insecure direct object reference vulnerability

Zyxel security advisory for the new Mirai malware variant targeting P660HN devices

Reinforcing router security: German BSI’s Secure Broadband Router guideline

Zyxel security advisory for BCMUPnP_Hunter botnet

Zyxel security advisory for IKEv1 protocol vulnerability

Zyxel security advisory for the Linux kernel TCP flaw

Security update for Zyxel CPE devices and Small Business Gateways

Security advisory for the VPNFilter malware

Zyxel security advisory for Denial of Service on P-660HW v3

Zyxel security advisory for Meltdown and Spectre attacks

Zyxel security advisory for the recent botnet attacks targeting PK5001Z

Zyxel security advisory for dnsmasq vulnerabilities

Zyxel statement to vulnerability CVE-2017-3216

Zyxel advisory: password change recommendations to maximize protection

Zyxel statement for the TR-064 protocol implementation in CPEs

Brute force attacks? Zyxel to tighten protection on routers and CPE

Zyxel advisory for vulnerability CVE-2015-7547

Zyxel to fix SSH private Key and certificate vulnerability

Zyxel to issue fix for CERT VU#870744 Vulnerabilities

Zyxel to issue fix for LTE3301-Q222 software bug

Zyxel not affected by “RSA-CRT Key Leaks”

Zyxel product support for Microsoft Windows 10

Guard against “Misfortune Cookie” vulnerability

Shellshock!? Is it an issue for Zyxel products?

WPS brute force attack

End User License Agreement (EULA)

Zyxel security advisory for post-authentication memory corruption vulnerabilities in some DSL/Ethernet CPE, fiber ONT, and Wi-Fi extender versions

Zyxel security advisory for buffer overflow vulnerabilities in some 5G NR/4G LTE CPE, DSL/Ethernet CPE, Fiber ONT, and Wi-Fi extender devices

Zyxel security advisory for command injection vulnerability in EMG2926-Q10A Ethernet CPE

Zyxel security advisory for command injection vulnerability in P660HN-T1A DSL CPE

Zyxel security advisory for command injection and buffer overflow vulnerabilities of CPE, fiber ONTs, and WiFi extenders

Zyxel security advisory for cleartext storage of information vulnerability

Zyxel security advisory for buffer overflow vulnerability in Realtek eCos SDK

Zyxel security advisory for OS command injection and buffer overflow vulnerabilities of CPE and ONTs

Zyxel security advisory for multiple vulnerabilities

Zyxel security advisory for Apache Log4j RCE vulnerabilities

Zyxel security advisory for WiFi simple config buffer overflow vulnerabilities

Zyxel security advisory for FragAttacks against WiFi products

Zyxel security advisory for CGI vulnerability of LTE

Zyxel security advisory for DNSpooq

Zyxel security advisory for remote code execution and denial-of-service vulnerabilities of CPE

Zyxel security advisory for a new variant of Gafgyt malware

Zyxel security advisory for P1302-T10D v3 modem insecure direct object reference vulnerability

Zyxel security advisory for the new Mirai malware variant targeting P660HN devices

Reinforcing router security: German BSI’s Secure Broadband Router guideline

Zyxel security advisory for BCMUPnP_Hunter botnet

Zyxel security advisory for IKEv1 protocol vulnerability

Zyxel security advisory for the Linux kernel TCP flaw

Security update for Zyxel CPE devices and Small Business Gateways

Security advisory for the VPNFilter malware

Zyxel security advisory for Denial of Service on P-660HW v3

Zyxel security advisory for Meltdown and Spectre attacks

Zyxel security advisory for the recent botnet attacks targeting PK5001Z

Zyxel security advisory for dnsmasq vulnerabilities

Zyxel statement to vulnerability CVE-2017-3216

Zyxel advisory: password change recommendations to maximize protection

Zyxel statement for the TR-064 protocol implementation in CPEs

Brute force attacks? Zyxel to tighten protection on routers and CPE

Zyxel advisory for vulnerability CVE-2015-7547

Zyxel to fix SSH private Key and certificate vulnerability

Zyxel to issue fix for CERT VU#870744 Vulnerabilities

Zyxel to issue fix for LTE3301-Q222 software bug

Zyxel not affected by “RSA-CRT Key Leaks”

Zyxel product support for Microsoft Windows 10

Guard against “Misfortune Cookie” vulnerability

Shellshock!? Is it an issue for Zyxel products?

WPS brute force attack

End User License Agreement (EULA)