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4 vulnerabilities found for NC63 by Netis Systems
CVE-2026-76071 (GCVE-0-2026-76071)
Vulnerability from nvd – Published: 2026-08-24 15:42 – Updated: 2026-08-24 15:42
VLAI
EPSS
VEX
Title
Netis NC63 V3.0.0.3327 Stack Buffer Overflow via destHost Parameter
Summary
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.
Severity
9.8 (Critical)
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://ozcanpng.dev/blog/cve-2026-76071-netis-nc… | technical-descriptionexploit |
| https://github.com/ozcanpng/CVE-2026-76071 | technical-descriptionexploit |
| https://www.netis-systems.com/products/NC63.html | product |
| https://www.vulncheck.com/advisories/netis-nc63-s… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Netis Systems | NC63 |
Affected:
0 , ≤ 3.0.0.3327
(custom)
|
Date Public
2026-08-20 00:00
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CVE-2026-76070 (GCVE-0-2026-76070)
Vulnerability from nvd – Published: 2026-08-24 15:41 – Updated: 2026-08-24 15:43
VLAI
EPSS
VEX
Title
Netis NC63 V3.0.0.3327 Stack Buffer Overflow via Login Password Parameter
Summary
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.
Severity
9.8 (Critical)
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://ozcanpng.dev/blog/cve-2026-76070-netis-nc… | technical-descriptionexploit |
| https://github.com/ozcanpng/CVE-2026-76070 | technical-descriptionexploit |
| https://www.netis-systems.com/products/NC63.html | product |
| https://www.vulncheck.com/advisories/netis-nc63-s… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Netis Systems | NC63 |
Affected:
0 , ≤ 3.0.0.3327
(custom)
|
Date Public
2026-08-20 00:00
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],
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}
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}
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CVE-2026-76071 (GCVE-0-2026-76071)
Vulnerability from cvelistv5 – Published: 2026-08-24 15:42 – Updated: 2026-08-24 15:42
VLAI
EPSS
VEX
Title
Netis NC63 V3.0.0.3327 Stack Buffer Overflow via destHost Parameter
Summary
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.
Severity
9.8 (Critical)
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://ozcanpng.dev/blog/cve-2026-76071-netis-nc… | technical-descriptionexploit |
| https://github.com/ozcanpng/CVE-2026-76071 | technical-descriptionexploit |
| https://www.netis-systems.com/products/NC63.html | product |
| https://www.vulncheck.com/advisories/netis-nc63-s… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Netis Systems | NC63 |
Affected:
0 , ≤ 3.0.0.3327
(custom)
|
Date Public
2026-08-20 00:00
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CVE-2026-76070 (GCVE-0-2026-76070)
Vulnerability from cvelistv5 – Published: 2026-08-24 15:41 – Updated: 2026-08-24 15:43
VLAI
EPSS
VEX
Title
Netis NC63 V3.0.0.3327 Stack Buffer Overflow via Login Password Parameter
Summary
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.
Severity
9.8 (Critical)
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://ozcanpng.dev/blog/cve-2026-76070-netis-nc… | technical-descriptionexploit |
| https://github.com/ozcanpng/CVE-2026-76070 | technical-descriptionexploit |
| https://www.netis-systems.com/products/NC63.html | product |
| https://www.vulncheck.com/advisories/netis-nc63-s… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Netis Systems | NC63 |
Affected:
0 , ≤ 3.0.0.3327
(custom)
|
Date Public
2026-08-20 00:00
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"title": "Netis NC63 V3.0.0.3327 Stack Buffer Overflow via Login Password Parameter",
"x_generator": {
"engine": "vulncheck"
}
}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2026-76070",
"datePublished": "2026-08-24T15:41:16.908Z",
"dateReserved": "2026-08-18T21:04:48.503Z",
"dateUpdated": "2026-08-24T15:43:11.742Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}