Netcore NR255-V EUVD-2026-80057

Q: What is the CVSS score of EUVD-2026-80057?

EUVD-2026-80057 has a CVSS 4.0 base score of 7.1 (High). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/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.

| CVE-2026-76854 HIGH

Insufficiently Protected Credentials (CWE-522)

2026-09-15 disclosure@vulncheck.com

GHSA-qh3g-h4q9-2w2q

Information Disclosure

7.1

CVSS 4.0 · Vendor: vulncheck

Severity by source

Vendor (vulncheck) PRIMARY

7.1 HIGH

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/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 (vulncheck) · only source for this CVE.

CVSS VectorVendor: vulncheck

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Lifecycle Timeline

Analysis Generated

Sep 15, 2026 - 22:31 vuln.today

CVE Published

Sep 15, 2026 - 22:16 cve.org

HIGH 7.1

DescriptionCVE.org

Netcore NR255-V version 1.5.130703 contains a sensitive information disclosure vulnerability in l7_web_auth_user_show.cgi related to captive-portal credential handling. Attackers can query this component to obtain captive-portal user credentials, compromising confidentiality of authenticated network access.

AnalysisAI

Netcore NR255-V routers running firmware 1.5.130703 expose captive-portal account credentials through the l7_web_auth_user_show.cgi handler, allowing anyone who can reach the web interface with a low-privileged session to read usernames and passwords stored for web-authentication (captive-portal) users. Successful retrieval hands the attacker working credentials for authenticated network access, so the confidentiality impact is rated High while integrity and availability are unaffected. …