Is there a patch available for EUVD-2026-48595?

Yes, a patch is available for EUVD-2026-48595. Update the affected software to the latest version immediately.

Lweb 802 EUVD-2026-48595

Q: What is the CVSS score of EUVD-2026-48595?

EUVD-2026-48595 has a CVSS 4.0 base score of 8.7 (High). CVSS 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/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 exploitation probability: 0.4%.

| CVE-2026-55730 HIGH

Cross-site Scripting (XSS) (CWE-79)

2026-07-24 NCSC.ch

GHSA-8c38-mwr2-hj5c

XSS Lweb 802 Loytec

8.7

CVSS 4.0 · Vendor: NCSC.ch

Severity by source

Vendor (NCSC.ch) PRIMARY

8.7 HIGH

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

Primary rating from Vendor (NCSC.ch) · only source for this CVE.

CVSS VectorVendor: NCSC.ch

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Scope

Lifecycle Timeline

Analysis Generated

Jul 26, 2026 - 11:48 vuln.today

Patch available

Jul 24, 2026 - 17:48 EUVD

CVE Published

Jul 24, 2026 - 14:00 cve.org

HIGH 8.7

DescriptionCVE.org

Reflected Cross-Site Scripting (CWE-79) in LWEB802 in Loytec LWEB-802 before 5.0.8 on all platforms allows an unauthenticated remote attacker to execute arbitrary JavaScript in a victim's browser and perform actions with the victim's privileges via a crafted link containing a malicious project or mspParams parameter.

AnalysisAI

Reflected Cross-Site Scripting in Loytec LWEB-802 versions prior to 5.0.8 allows unauthenticated remote attackers to execute arbitrary JavaScript in a victim's browser by enticing them to click a crafted link containing malicious project or mspParams parameters. No active exploitation has been observed in the wild and EPSS indicates a low probability of exploitation (0.36%). Vendor has released a fix in version 5.0.8.