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MUST READ

Hackers deploy fake SonicWall VPN App to steal corporate credentials

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Mainline Health Systems data breach impacted over 100,000 individuals

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Disrupting the operations of cryptocurrency mining botnets

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Prometei botnet activity has surged since March 2025

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The U.S. House banned WhatsApp on government devices due to security concerns

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Russia-linked APT28 use Signal chats to target Ukraine official with malware

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McLaren Health Care data breach impacted over 743,000 people

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SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 50

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Security Affairs newsletter Round 529 by Pierluigi Paganini – INTERNATIONAL EDITION

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Iran confirmed it shut down internet to protect the country against cyberattacks

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Godfather Android trojan uses virtualization to hijack banking and crypto apps

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Linux flaws chain allows Root access across major distributions

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A ransomware attack pushed the German napkin firm Fasana into insolvency

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Researchers discovered the largest data breach ever, exposing 16 billion login credentials

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ZYXEL

Pierluigi Paganini May 25, 2023
Zyxel firewall and VPN devices affected by critical flaws

Zyxel fixed two critical flaws in multiple firewall and VPN products that can lead to remote code execution or cause a DoS condition. Zyxel addressed two critical buffer overflow vulnerabilities, tracked as CVE-2023-33009 and CVE-2023-33010, that affect several of its firewall and VPN products. A remote, unauthenticated attacker can can trigger the flaws to cause a denial-of-service (DoS) […]

Pierluigi Paganini May 26, 2022
Zyxel addresses four flaws affecting APs, AP controllers, and firewalls

Zyxel addressed multiple vulnerabilities impacting many of its products, including APs, AP controllers, and firewalls. Zyxel has released security updates to address multiple vulnerabilities affecting multiple products, including firewall, AP, and AP controller products. Below is the list of the four vulnerabilities, the most severe one is a command injection flaw in some CLI commands […]

Pierluigi Paganini May 17, 2022
CISA adds CVE-2022-30525 flaw in Zyxel Firewalls to its Known Exploited Vulnerabilities Catalog

US Critical Infrastructure Security Agency (CISA) adds critical CVE-2022-30525 RCE flaw in Zyxel Firewalls to its Known Exploited Vulnerabilities Catalog. The U.S. Cybersecurity and Infrastructure Security Agency added the recently disclosed remote code execution bug, tracked as CVE-2022-30525, affecting Zyxel firewalls, to its Known Exploited Vulnerabilities Catalog. According to Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk […]

Pierluigi Paganini May 13, 2022
Zyxel fixed firewall unauthenticated remote command injection issue

Zyxel addressed a critical flaw affecting Zyxel firewall devices that allows unauthenticated, remote attackers to gain arbitrary code execution. Zyxel has moved to address a critical security vulnerability (CVE-2022-30525, CVSS score: 9.8) affecting Zyxel firewall devices that enables unauthenticated and remote attackers to gain arbitrary code execution as the “nobody” user. The issue was discovered […]

Pierluigi Paganini June 24, 2021
Zyxel warns customers of attacks on its enterprise firewall and VPN devices

Networking equipment giant Zyxel warns customers of a series of attacks that have been targeting some of its enterprise firewall and VPN devices. Networking equipment vendor Zyxel warned its customers of a series of attacks that have been targeting some of its enterprise firewall and VPN server solutions. The threat actors are targeting the USG, […]

Pierluigi Paganini January 06, 2021
Recently disclosed CVE-2020-29583 Zyxel flaw already under opportunistic attack

Threat actors are attempting to hack Zyxel devices exploiting the recently disclosed vulnerability CVE-2020-29583, security researchers warn. The Taiwanese vendor Zyxel has recently addressed a critical vulnerability in its firmware, tracked as CVE-2020-29583, related to the presence of a hardcoded undocumented secret account. The vulnerability received a CVSS score of 7.8, it could be exploited by […]

Pierluigi Paganini January 01, 2021
Expert found a secret backdoor in Zyxel firewall and VPN

Zyxel addressed a critical flaw in its firmware, tracked as CVE-2020-29583, related to the presence of a hardcoded undocumented secret account. The Taiwanese vendor Zyxel has addressed a critical vulnerability in its firmware related to the presence of a hardcoded undocumented secret account. The vulnerability, tracked as CVE-2020-29583 received a CVSS score of 7.8, it could be exploited […]

Pierluigi Paganini February 25, 2020
Zyxel addresses Zero-Day vulnerability in NAS devices

Tech vendor Zyxel addresses a critical vulnerability in several network-attached storage (NAS) devices that is already being exploited in the wild. Zyxel has released security patches to address a critical remote code execution vulnerability, tracked as CVE-2020-9054, that affects several NAS devices. The flaw can be exploited by an unauthenticated attacker, it resides in the weblogin.cgi CGI executable […]

Pierluigi Paganini September 04, 2019
Some Zyxel devices can be hacked via DNS requests

Experts at SEC Consult discovered several security issues in various Zyxel devices that allow to hack them via unauthenticated DNS requests. Security researchers at SEC Consult discovered multiple vulnerabilities in various Zyxel devices, including hardcoded credentials and issues that could allow to hack them via unauthenticated DNS requests. The first issue is an information disclosure […]

Pierluigi Paganini January 17, 2017
Thai TrueOnline ZyXEL and Billion routers still unpatched since July

The security researcher Pedro Ribeiro disclosed several vulnerabilities in the ZyXEL customized routers that could be easily exploited by hackers. Details on serious vulnerabilities in a number of routers freely distributed by the TrueOnline Thai ISP were published on Monday after private disclosures made to the vendors in July went unanswered. The security researcher Pedro Ribeiro from […]

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    recent articles

    Hackers deploy fake SonicWall VPN App to steal corporate credentials

    Hacking / June 25, 2025

    Mainline Health Systems data breach impacted over 100,000 individuals

    Data Breach / June 25, 2025

    Disrupting the operations of cryptocurrency mining botnets

    Malware / June 25, 2025

    Prometei botnet activity has surged since March 2025

    Cyber Crime / June 25, 2025

    The U.S. House banned WhatsApp on government devices due to security concerns

    Mobile / June 24, 2025

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    pierluigi.paganini@securityaffairs.co

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