High severity7.2NVD Advisory· Published Sep 15, 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.

Affected products

Netcore/NR255-Vllm-fuzzy
Range: 1.5.130703
Draw Ctf/Netcore Router Public Refsllm-fuzzy2 versions
1.5.130703+ 1 more
- (no CPE)range: 1.5.130703
- (no CPE)

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

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