Installing patches removes the backdoor account, which, according to Eye Control researchers, uses the " zyfwp" username and the " PrOw!aN_fXp" password.
#ZYXEL FIRMWARE SERIES#
Patches for the NXC series are expected in April 2021, according to a Zyxel security advisory. Patches are currently available only for the ATP, USG, USG Flex, and VPN series. Many of these devices are used at the edge of a company's network and, once compromised, allow attackers to pivot and launch further attacks against internal hosts. the NXC series - used as a WLAN access point controller.the USG FLEX series - used as a hybrid firewall and VPN gateway.the Unified Security Gateway (USG) series - used as a hybrid firewall and VPN gateway.the Advanced Threat Protection (ATP) series - used primarily as a firewall.This includes Zyxel product lines such as: Affected modules include many enterprise-grade devicesĪffected models include many of Zyxel's top products from its line of business-grade devices, usually deployed across private enterprise and government networks. Security experts warn that anyone ranging from DDoS botnet operators to state-sponsored hacking groups and ransomware gangs could abuse this backdoor account to access vulnerable devices and pivot to internal networks for additional attacks.
#ZYXEL FIRMWARE UPDATE#
The backdoor account, discovered by a team of Dutch security researchers from Eye Control, is considered as bad as it gets in terms of vulnerabilities.ĭevice owners are advised to update systems as soon as time permits. Learn how and why it is finally changing. The technology world has spent so much of the past two decades focused on innovation that security has often been an afterthought.
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