Medium severity · published Sep 15, 2026
CVE-2026-76873
Netcore NR255-V 1.5.130703 Stored Cross-Site Scripting via DHCP and ARP Hostname Fields
5.2
CVSS
0.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Adjacent
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NR
NR255-V · Netcore
1.5.130703 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-76873
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-76873
github.com
https://github.com/draw-ctf/netcore-router-public-refs/blob/main/2026.08.19-netcore-nr255v-dhcp-lan-xss.md
www.vulncheck.com
https://www.vulncheck.com/advisories/netcore-nr255-v-1.5.130703-stored-cross-site-scripting-via-dhcp-and-arp-hostname-fields
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