Sensitive Information Disclosure in Netcore NR255-V by Netcore
CVE-2026-76854

7.1HIGH

Key Information:

Vendor

Netcore

Status
Nr255-v
Vendor
CVE Published:
15 September 2026

What is CVE-2026-76854?

The Netcore NR255-V device, specifically version 1.5.130703, exhibits a vulnerability in the l7_web_auth_user_show.cgi component that leads to unauthorized disclosure of sensitive user credentials. This issue arises in the context of captive portal credential management, allowing attackers to exploit the vulnerability to retrieve confidential information. This compromises the confidentiality of user data associated with authenticated access to network services, posing a significant risk to user privacy and network integrity.

Affected Version(s)

NR255-V 1.5.130703

References

https://github.com/draw-ctf/netcore-router-public-refs/bl...
third-party-advisory
https://www.vulncheck.com/advisories/netcore-nr255-v-1.5....
third-party-advisory

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Zhou Ao
Yin Luxing
Jiang Yuxuan
Liu Xin
@Nebusec
.