A vulnerability classified as problematic has been found in Zyxel GS1200-5v3, GS1200-8v3, GS1200-5HPv3, GS1200-8HPv3 and GS1200-10v3 . Affected is an unknown function of the component HTTP Request Handler . Performing a manipulation results in missing authorization. This vulnerability is known as CVE-2026-4795 . Access to the local network is required for this attack. No exploit is available.