What is CVE-2026-76857?

CVE-2026-76857 is a medium-severity vulnerability, classified under Insufficiently Protected Credentials. CVSS score: 6.5/10. Published 2026-09-15.

How severe is CVE-2026-76857?

Medium severity. CVSS v3 base score is 6.5 out of 10.

CVE-2026-76857

CVE-2026-76857

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.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Weakness classification (CWE)

CWE-522 — Insufficiently Protected Credentials

References

disclosure@vulncheck.com (third-party-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-76857?: CVE-2026-76857 is a medium-severity vulnerability, classified under Insufficiently Protected Credentials. CVSS score: 6.5/10. Published 2026-09-15.
How severe is CVE-2026-76857?: Medium severity. CVSS v3 base score is 6.5 out of 10.