CVE-2026-76071 — Netis NC63 V3.0.0.3327 Stack Buffer Overflow via destHost Parameter
Netis NC63 firmware through V3.0.0.3327 contains a stack-based buffer overflow vulnerability that allows unauthenticated remote attackers to overwrite saved stack state by suppl…
Published: 2026-08-24 · CVSS: 9.3 · CVSS 4.0
Netis NC63 firmware through V3.0.0.3327 contains a stack-based buffer overflow vulnerability that allows unauthenticated remote attackers to overwrite saved stack state by supplying an oversized destHost parameter to the ipFilterList=mod action in netis.cgi. Attackers can exploit widthless sscanf conversions that copy user-supplied input into fixed-size stack buffers before authentication is verified, achieving remote code execution as root due to the Boa web server executing the CGI environment with root privileges.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7