CRITICALCVSS 9.8Vulnerability
CVE-2026-76070
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.
Properties
- severity
- CRITICAL
- cvss_severity
- CRITICAL
- cvss_score
- 9.8
- retrieved_at
- 2026-09-25T15:10:03+00:00
- score
- 9.8
- last_source
- NVD
- cve_id
- CVE-2026-76070
- cvss_vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- signal_observed_at
- 2026-09-25T15:10:03+00:00
- vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- published_at
- 2026-08-24T16:17:22.963
- last_modified
- 2026-09-24T20:43:32.537
Related Entities (2)
DESCRIBED_BY (1)
→[Source]NVD
HAS_WEAKNESS (1)
→[Weakness]Stack-based Buffer Overflow
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