CVE-2026-76070 — Netis NC63 V3.0.0.3327 Stack Buffer Overflow via Login Password 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 submi…
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 submitting an oversized Base64-encoded password to the login handler in /bin/netis.cgi. Attackers can exploit the custom Base64 decoder's lack of output length validation against the fixed-size stack buffer to achieve remote code execution with root privileges, as the Boa web server executes the CGI environment as root.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7