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Backdoor in Zyxel Firewalls and Gateways

Schneier on Security

This is bad : More than 100,000 Zyxel firewalls, VPN gateways, and access point controllers contain a hardcoded admin-level backdoor account that can grant attackers root access to devices via either the SSH interface or the web administration panel. […].

Firewall 344
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What Is a Firewall and Do you Need One?

Adam Levin

A firewall is a network security device or program designed to prevent unauthorized and malicious internet traffic from entering a private network or device. Firewalls filter incoming network traffic at a computer’s entry points, or ports, where information is exchanged between the computer network and external devices. Probably not.

Firewall 298
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U.S. CISA adds Microsoft Outlook, Sophos XG Firewall, and other flaws to its Known Exploited Vulnerabilities catalog

Security Affairs

Cybersecurity and Infrastructure Security Agency (CISA) adds Microsoft Outlook, Sophos XG Firewall, and other flaws to its Known Exploited Vulnerabilities catalog. is a buffer overflow issue in Sophos XG Firewall 17.x is a Remote Code Execution flaw in Microsoft Outlook. is a Remote Code Execution flaw in Microsoft Outlook.

Firewall 122
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Best of 2024: If You are Reachable, You Are Breachable, and Firewalls & VPNs are the Front Door 

Security Boulevard

Firewalls and VPN appliances are critical gateways. The post Best of 2024: If You are Reachable, You Are Breachable, and Firewalls & VPNs are the Front Door appeared first on Security Boulevard. Like all on-prem systems, a vulnerability can lead to a compromise that is used to open the door for attackers.

Firewall 119
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Attackers exploit recently disclosed Palo Alto Networks PAN-OS firewalls bug

Security Affairs

Threat actors are exploiting a recently disclosed vulnerability, tracked as CVE-2025-0108, inPalo Alto Networks PAN-OS firewalls. Researchers warn that threat actors are exploiting a recently disclosed vulnerability, tracked as CVE-2025-0108, in Palo Alto Networks PAN-OS firewalls. ” states GreyNoise. h4 >= 11.2.4-h4

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Zyxel firewalls targeted in recent ransomware attacks

Security Affairs

Zyxel warns that a ransomware group has been observed exploiting a recently patched command injection issue in its firewalls. Zyxel warns that a ransomware gang has been observed exploiting a recently patched command injection vulnerability, tracked as CVE-2024-42057, in its firewalls for initial compromise.

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A new campaign is likely targeting a zero-day in Fortinet FortiGate firewalls

Security Affairs

Experts warn of a new campaign targeting an alleged zero-day in Fortinet FortiGate firewalls with management interfaces exposed online. Arctic Wolf researchers observed a campaign targeting Fortinet FortiGate firewalls with exposed management interfaces, likely exploiting a zero-day vulnerability. ” continues the advisory.