CVE-2026-12496

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

Published Jul 24, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
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.

Remediation

Vendor Solution

Upgrade to firmware version 8.4.18.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Loytec
Loytec l-dali
Loytec l-gate
Loytec l-inx
Loytec l-iob
Loytec l-pad
Loytec l-roc
Loytec l-vis
Loytec lip-me20xc
Vendors & Products Loytec
Loytec l-dali
Loytec l-gate
Loytec l-inx
Loytec l-iob
Loytec l-pad
Loytec l-roc
Loytec l-vis
Loytec lip-me20xc
Type Values Removed Values Added
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.
Title Loytec LINX firmware: Unauthenticated stored XSS in OPC XML-DA server
Weaknesses CWE-116
CWE-79
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
NCSC.ch
Published
Updated
Jul 24, 2026, 3:01 PM
Reserved
Jun 17, 2026, 8:57 AM
Status
Deferred
Published
Jul 24, 2026, 3:17 PM
Modified
Jul 27, 2026, 8:32 PM