CVE-2026-76857

Medium CVSS 6.5

Published 2026-09-15 · last changed 2026-09-17

The fix

We hold no Microsoft remediation data for CVE-2026-76857, which normally means it is not a Windows CVE. For non-Microsoft software the fix is the vendor's own updated release, and the affected versions are listed below.

What it is

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.

Sources

NVD record for CVE-2026-76857

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N