PT-2025-31550 · Lb Link · Lb-Link Bl-Cpe300M

Ravindu Wickramasinghe + 1 · Published 2025-05-17 · Updated 2025-07-31 · CVE-2025-51569

Positive Technologies (AI Summary)

CVSS v2.0

6.4

Medium

Base vector

AV:N/AC:L/Au:N/C:P/I:P/A:N

Name of the Vulnerable Software and Affected Versions LB-Link BL-CPE300M version 01.01.02P42U14 06

Description A cross-site scripting (XSS) vulnerability exists in the web interface of the router. The /goform/goform get cmd process API endpoint fails to sanitize user input in the cmd parameter before reflecting it into a text/html response. This allows unauthenticated attackers to inject arbitrary JavaScript, which is executed in the context of the router's origin when a crafted URL is accessed. The issue requires user interaction to exploit.

Recommendations Ensure proper input sanitization is implemented for the cmd parameter in the /goform/goform get cmd process endpoint.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

BDU:2026-00049

CVE-2025-51569

Affected Products

Lb-Link Bl-Cpe300M

References · 7

• https://nvd.nist.gov/vuln/detail/CVE-2025-51569 · Security Note
• https://bdu.fstec.ru/vul/2026-00049 · Security Note
• https://zyenra.com/blog/xss-in-lb-link-lb-cpe300m.html · Note
• https://lb-link.com/CPE300M-AX300-4G-LTE-Router-pd502775568.html · Note
• https://twitter.com/CVEnew/status/1950939124166508652 · Twitter Post
• https://twitter.com/VulmonFeeds/status/1950958153832550886 · Twitter Post
• https://t.me/CVEtracker/28865 · Telegram Post