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#3 The Hacker News general November 05, 2026 at 07:06 UTC

Zyxel GS1900 Patch Fails to Block Zero-Day Exploit Allowing Root Command Execution

By [email protected] (The Hacker News)

AI Summary

Zyxel's earlier firmware patch (version 2.90) for actively exploited GS1900 switches failed to fully remediate the underlying flaw, tracked as CVE-2026-107441 — an out-of-bounds write allowing unauthenticated OS command execution via crafted HTTP requests to the web management interface. Binarly researchers confirmed attackers could still exploit patched devices, prompting Zyxel to release new firmware covering 10 GS1900 switch models. Administrators who applied the initial patch must update again immediately.

Relevance score: 89.0/100

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