High severity7.2NVD Advisory· Published Sep 15, 2026· Updated Sep 21, 2026

CVE-2026-76866

Description

Netcore NR255-V firmware version 1.5.130703 builds root-run command lines from unquoted user-supplied DDNS input in DDNSset_cgi.c and related ddns_Proc.c components, enabling os command argument injection. Attackers can exploit the unsanitized parameters to inject additional command arguments executed with root privileges.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Draw Ctf/Netcore Router Public Refsreferences2 versions
(expand)+ 1 more
- (no CPE)
- (no CPE)range: 1.5.130703
Netcore/NR255-Vllm-fuzzy
Range: 1.5.130703

Patches

Vulnerability mechanics

References

github.com/draw-ctf/netcore-router-public-refs/blob/main/2026.08.19-netcore-nr255v-ddns-argv-injection.mdnvd
www.vulncheck.com/advisories/netcore-nr255-v-1.5.130703-os-command-argument-injection-via-unquoted-ddns-parametersnvd

News mentions

Draw Ctf Netcore Routers: 24 Vulnerabilities Disclosed, Ranging from XSS to Firmware Exploits
Vypr Intelligence · Sep 15, 2026

cvss	0.468
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000