Netcore NR255-V CVE-2026-76871

Q: What is the CVSS score of CVE-2026-76871?

CVE-2026-76871 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.

EUVD-2026-80043 HIGH

Insufficiently Protected Credentials (CWE-522)

2026-09-15 disclosure@vulncheck.com

GHSA-9v69-pv67-hqj7

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 - 22:32 vuln.today

CVE Published

Sep 15, 2026 - 22:17 cve.org

HIGH 7.1

DescriptionCVE.org

Netcore NR255-V version 1.5.130703 contains a sensitive information disclosure vulnerability in mod_vpn_remote/plan.json, pptpd_user_show.cgi, pptp_client_config_show.cgi, and l2tpd_user_show.cgi. Attackers can leverage these components to obtain PPTP and L2TP VPN credentials.

AnalysisAI

Netcore NR255-V routers running firmware 1.5.130703 expose stored PPTP and L2TP VPN credentials through four web-accessible handlers — the mod_vpn_remote/plan.json endpoint and the pptpd_user_show.cgi, pptp_client_config_show.cgi, and l2tpd_user_show.cgi CGI scripts. An attacker who holds a low-privileged session on the router's web management interface (CVSS 4.0 PR:L) can request these endpoints over the network without any user interaction and recover VPN usernames and passwords in the clear. …