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High · 8.7 CVE-2026-12496 EUVD-2026-48589GHSA-x8xh-f974-3f3h

Loytec LINX firmware: Unauthenticated stored XSS in OPC XML-DA server

Published Jul 24, 2026 · Updated Jul 24, 2026 · Assigned by NCSC.ch

Description

Stored Cross-Site Scripting (CWE-79) in the OPC XML-DA server statistics in Loytec LIP-ME201C, L-INX, L-GATE, L-ROC, L-IOB, L-DALI, L-VIS and L-PAD through 8.4.16 on LINX-A64 allows an unauthenticated remote attacker to execute arbitrary JavaScript in an administrator's browser (session hijacking, credential theft, device reconfiguration) via a crafted `User-Agent` header in a `POST /da` request.

Affected products

VendorProductAffectedFixed
Loytec LIP-ME20xC ≤ 8.4.16 —
Loytec L-INX ≤ 8.4.16 —
Loytec L-GATE ≤ 8.4.16 —
Loytec L-ROC ≤ 8.4.16 —
Loytec L-IOB ≤ 8.4.16 —
Loytec L-DALI ≤ 8.4.16 —
Loytec L-VIS ≤ 8.4.16 —
Loytec L-PAD ≤ 8.4.16 —

References