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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.004 (29.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 29.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Weakness classification (CWE)
References
- github.com/draw-ctf/netcore-router-public-refs/blob/main/2026.08.19-netcore-nr2… (third-party-advisory)
- www.vulncheck.com/advisories/netcore-nr255-v-1.5.130703-plaintext-ddns-credenti… (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.