CVE-2026-12496highCWE-116CWE-79

CVE-2026-12496: high-severity vulnerability in Loytec L-INX

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

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21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.7epss 0.6%
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.
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
Affected products
Loytec · L-DALILoytec · L-GATELoytec · L-INXLoytec · L-IOBLoytec · LIP-ME20xCLoytec · L-PADLoytec · L-ROCLoytec · L-VIS
Related CVEs — Loytec L-INX

In the same product, most dangerous first.

CVE-2026-55732HIGHLoytec LINX firmware: Out-of-bounds Read in BACnet packet parsing (bacdt_datetime_to_tod)EPSS 0.5%CVE-2026-55731MEDIUMLoytec LINX firmware: Unchecked input for loop condition in the SNMP agentEPSS 0.5%CVE-2026-12504HIGHLoytec LINX firmware: Improper Authentication in PAM configurationEPSS 0.2%CVE-2026-12503CRITICALLoytec LINX firmware: Improper Link Resolution in /usr/bin/larm_starterEPSS 0.2%CVE-2026-55728LOWLoytec LINX firmware: Stack-based Buffer Overflow in cmd_ipaddr_conflictEPSS 0.2%CVE-2026-12502HIGHLoytec LINX firmware: Improper Privilege Management in /usr/bin/ltsudoEPSS 0.2%