Sensitive Information Exposure in Loytec LWEB-802 Browser LocalStorage
CVE-2026-55729

7.7HIGH

Key Information:

Vendor

Loytec

Status
Lweb-802
Vendor
CVE Published:
24 July 2026

What is CVE-2026-55729?

A vulnerability present in Loytec's LWEB-802 prior to version 5.0.8 allows unauthorized remote attackers to access sensitive information stored in the browser's localStorage. This situation arises when crafted links are utilized, enabling the potential leakage of stored management credentials. The flaw constitutes a significant risk as it enables an unauthenticated attacker to exploit this exposure and compromise users' sensitive data across all platforms.

Affected Version(s)

LWEB-802 0 < 5.0.8

References

https://www.loytec.com/support/product-security/advisorie...
vendor-advisory

CVSS V4

Score:
7.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Daniel Hulliger, armasuisse CYD Campus
Damian Pfammatter, armasuisse CYD Campus
.