CVE-2026-76857

EUVD-2026-80060 HIGH

Insufficiently Protected Credentials (CWE-522)

2026-09-15 disclosure@vulncheck.com

GHSA-g7jc-f2x5-32j3

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 firmware version 1.5.130703 contains a sensitive information disclosure vulnerability in the ddns_wan_list_show.cgi endpoint and related DDNSset_cgi, IGD_GetCgiHandler, and IGD_CgiCall components. Attackers who reach this CGI handler can obtain plaintext DDNS credentials, exposing sensitive account information.

AnalysisAI

Netcore NR255-V routers running firmware 1.5.130703 expose stored DDNS account credentials in cleartext through the ddns_wan_list_show.cgi endpoint, with related handling paths in DDNSset_cgi, IGD_GetCgiHandler and IGD_CgiCall. An attacker who can reach the device's web management interface with low-level authenticated access can read the plaintext DDNS username and password, which typically grant control over the dynamic DNS provider account tied to the router's public hostname. …