https://cybersecuritytracker.ai/?stack=1Stories and vulnerabilities involving Zyxel.Sun, 26 Jul 2026 22:32:51 GMThttps://greynoise.io/blog/exploit-attempts-targeting-zyxel-cve-2023-28771cst-1898GreyNoise detected exploit attempts targeting CVE-2023-28771, a remote code execution vulnerability in Zyxel IKE (Internet Key Exchange) packet decoders accessible over UDP port 500. The vulnerability allows unauthenticated attackers to execute arbitrary code on affected Zyxel devices. Active exploitation of this flaw is now occurring in the wild.Mon, 16 Jun 2025 00:00:00 GMThttps://greynoise.io/blog/heightened-in-the-wild-activity-key-technologiescst-1908On March 28, GreyNoise detected a sharp increase in wild exploitation activity targeting multiple vendors including SonicWall, Zoho, Zyxel, F5, Linksys, and Ivanti. The affected technologies span both edge systems and internal management tools, suggesting a broad attack campaign.Tue, 01 Apr 2025 00:00:00 GMThttps://greynoise.io/blog/active-exploitation-of-zero-day-zyxel-cpe-vulnerability-cve-2024-40891cst-1921A telnet-based command injection vulnerability (CVE-2024-40891) in Zyxel Customer Premises Equipment (CPE) devices is being actively exploited in the wild. Over 1,500 exposed systems are currently at risk, and the vendor has not yet released a patch.Tue, 28 Jan 2025 00:00:00 GMT