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CVE-2026-12496

HIGHCVSS 8.7/10EPSS 0.36%

Last modified

CVE-2026-12496 is a high-severity vulnerability rated 8.7/10 on the CVSS scale. 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.. EPSS estimates a 0.36% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 4.0
8.7/10

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability
0.36%

28.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LoytecLIP-ME20xC<= 8.4.16
LoytecL-INX<= 8.4.16
LoytecL-GATE<= 8.4.16
LoytecL-ROC<= 8.4.16
LoytecL-IOB<= 8.4.16
LoytecL-DALI<= 8.4.16
LoytecL-VIS<= 8.4.16
LoytecL-PAD<= 8.4.16

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2026-12496?
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.
How severe is CVE-2026-12496?
CVE-2026-12496 has a CVSS score of 8.7/10 (HIGH severity). The EPSS model estimates a 0.36% probability of exploitation in the next 30 days.
How do I fix CVE-2026-12496?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST