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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Loytec LIP-ME20xC unaffected
Version Status Constraints
0 affected ≤ 8.4.16
Loytec L-INX unaffected
Version Status Constraints
0 affected ≤ 8.4.16
Loytec L-GATE unaffected
Version Status Constraints
0 affected ≤ 8.4.16
Loytec L-ROC unaffected
Version Status Constraints
0 affected ≤ 8.4.16
Loytec L-IOB unaffected
Version Status Constraints
0 affected ≤ 8.4.16
Loytec L-DALI unaffected
Version Status Constraints
0 affected ≤ 8.4.16
Loytec L-VIS unaffected
Version Status Constraints
0 affected ≤ 8.4.16
Loytec L-PAD unaffected
Version Status Constraints
0 affected ≤ 8.4.16

No data.

No data.

No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

Upgrade to firmware version 8.4.18.

Workaround

No workaround given by the vendor.

References
Link Providers
https://www.loytec.com/support/product-security/advisories/8522-dibt-cve-20260526-0004-unauthenticated-stored-xxs-in-opc-xml-da-server-statistics-high cve-icon
History

Fri, 24 Jul 2026 18:30:00 +0000

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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: NCSC.ch

Published:

Updated: 2026-07-24T15:01:17.030Z

Reserved: 2026-06-17T08:57:07.049Z

Link: CVE-2026-12496

cve-icon Vulnrichment

Updated: 2026-07-24T15:01:09.205Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses