CVE-2026-76857 Netcore NR255-V 1.5.130703 Plaintext DDNS Credential Disclosure via ddns_wan_list_show.cgi
Attackers can access plaintext DDNS credentials via a CGI endpoint in Netcore NR255-V routers, exposing sensitive account information.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-76857?
CVE-2026-76857 is a high-severity vulnerability in Netcore NR255-V, published on 15 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-522
Which versions are affected by CVE-2026-76857?
How do I fix CVE-2026-76857?
No fix has been published for CVE-2026-76857 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-76857 being exploited?
There is no known exploitation of CVE-2026-76857 in the wild and no public exploit code.
Sources
Also known as GHSA-g7jc-f2x5-32j3.