CVE-2026-76857

7.1 highEPSS 0.4%

High (7.1). EPSS 0.4% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

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

CVSS 3.1

6.5 medium

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

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 29% of CVEs (scores of 2026-10-31)
CWE: CWE-522
Published: 2026-09-15
Modified: 2026-09-17
Record from: the NVD, synced 2026-10-19

References

https://github.com/draw-ctf/netcore-router-public-refs/blob/main/2026.08.19-netcore-nr255v-ddns-cred-disclosure.md
https://www.vulncheck.com/advisories/netcore-nr255-v-1.5.130703-plaintext-ddns-credential-disclosure-via-ddns-wan-list-show-cgi

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