CVE-2026-76872: Netcore NR255-V 1.5.130703 Stored Cross-Site Scripting via DHCP/ACL Management Pages

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-15 · updated 2026-09-17
Weakness: CWE-79

Description

Netcore NR255-V version 1.5.130703 contains a stored cross-site scripting vulnerability in DHCP static IP and IP ACL management pages, including dhcp_add_staticip_cgi, dhcp_staticip_show_cgi, ip_acl_set_cgi, and ip_acl_show_cgi. Attackers can inject persistent malicious scripts through these components to compromise the web management interface for other users.'

Affected products

Netcore NR255-V: 1.5.130703

References

https://github.com/draw-ctf/netcore-router-public-refs/blob/main/2026.08.19-netcore-nr255v-dhcp-acl-stored-xss.md
https://www.vulncheck.com/advisories/netcore-nr255-v-1.5.130703-stored-cross-site-scripting-via-dhcp-acl-management-pages

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