CVE-2026-76873

MEDIUM 5.2

Netcore NR255-V 1.5.130703 Stored Cross-Site Scripting via DHCP and ARP Hostname Fields

CVSS Score

5.2

EPSS Score

0.0%

EPSS Percentile

0th

Netcore NR255-V version 1.5.130703 contains a stored cross-site scripting vulnerability in the DHCP dynamic IP display and ARP bind list display components handling hostname fields. A LAN-based attacker can inject malicious script through these hostname fields, which is later rendered by network_config.js and network_security.js in the web management interface.

CWE	CWE-79
Vendor	netcore
Product	nr255-v
Published	Sep 15, 2026

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CVSS v3 Breakdown

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

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

Netcore / NR255-V

1.5.130703

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/draw-ctf/netcore-router-public-refs/blob/main/2026.08.19-netcore-nr255v-dhcp-lan-xss.md vulncheck.com: https://www.vulncheck.com/advisories/netcore-nr255-v-1.5.130703-stored-cross-site-scripting-via-dhcp-and-arp-hostname-fields

Credits

Zhou Ao Yin Luxing Jiang Yuxuan Liu Xin @Nebusec