Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV N L N N N H H H 9.3 .0134 70.3 —
AFFECTED Product Versions Fixed NC63 unspecified —
TIMELINE Aug 18 Reserved by VulnCheck Aug 24 EXPLOIT PUBLISHED — CVE-2026-76070 (Netis Systems NC63). Public exploit reference added. Aug 24 Published (CNA: VulnCheck)
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.
| Date | Event | Detail |
|---|---|---|
| August 18, 2026 | Reserved | Reserved by VulnCheck |
| August 24, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-76070 (Netis Systems NC63). Public exploit reference added. |
| August 24, 2026 | Published | Published (CNA: VulnCheck) |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| Netis Systems | NC63 | — | — | — |
Authoritative record: CVE-2026-76070 at cve.org
Vendors: netis systems
Weaknesses: CWE-121
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-76070 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
