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CVE-2026-111712 (GCVE-0-2026-111712)

Vulnerability from nvd – Published: 2026-10-16 17:40 – Updated: 2026-10-16 18:19

Title

Netcore NR256CN through 1.5.140116 Authentication Bypass via CGI Path Prefix

Summary

Netcore NR256CN through 1.5.140116 contains an authentication bypass vulnerability that allows unauthenticated attackers to reach protected management CGI handlers by prefixing the URI with a public route. Attackers can request paths prefixed with l7_web_auth.cgi or an .ico route to invoke protected management handlers without credentials.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-16 18:18 UTC

CWE

CWE-288 - Authentication Bypass Using an Alternate Path or Channel

Assigner

VulnCheck CNA under the mitre root

CNA scorecard B 84/100 over 6373 records in the last 180 days details

References

2 references

URL	Tags
https://github.com/lukadqq/netcore-router-public-…	third-party-advisory
https://www.vulncheck.com/advisories/netcore-nr25…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
Netcore	NR256CN	Affected: 0 , ≤ 1.5.140116 (custom)

Date Public

2026-10-16 00:00

Credits

Zhou Ao Yin Luxing Lu Fangzhou Liu Xin

Show details on NVD website

JSON

To clipboard

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CVE-2026-111711 (GCVE-0-2026-111711)

Vulnerability from nvd – Published: 2026-10-16 17:40 – Updated: 2026-10-16 21:16

Title

Netcore NR256CN through 1.5.140116 Pre-Auth Stack Overflow via Boa user_ok()

Summary

Netcore NR256CN through 1.5.140116 contains a pre-authentication stack overflow vulnerability in the Boa web server's user_ok() function, which copies Basic-auth usernames with unbounded strcpy() calls into 64-byte stack buffers. Unauthenticated attackers can send a username longer than 63 bytes to any protected /router/*.cgi route to crash the main Boa process or potentially execute code.

Severity

9.3 (Critical)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-16 20:53 UTC

CWE

CWE-121 - Stack-based Buffer Overflow

Assigner

VulnCheck CNA under the mitre root

CNA scorecard B 84/100 over 6373 records in the last 180 days details

References

2 references

URL	Tags
https://github.com/lukadqq/netcore-router-public-…	third-party-advisory
https://www.vulncheck.com/advisories/netcore-nr25…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
Netcore	NR256CN	Affected: 0 , ≤ 1.5.140116 (custom)

Date Public

2026-10-16 00:00

Credits

Zhou Ao Yin Luxing Lu Fangzhou Liu Xin

Show details on NVD website

JSON

To clipboard

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CVE-2026-111710 (GCVE-0-2026-111710)

Vulnerability from nvd – Published: 2026-10-16 17:40 – Updated: 2026-10-16 17:40

Title

Netcore NR256CN through 1.5.140116 Boa Web Server NULL Pointer Dereference DoS

Summary

Netcore NR256CN through 1.5.140116 contains a NULL pointer dereference vulnerability in the Boa web server's user_auth() function that allows unauthenticated attackers to crash the server via a malformed Authorization header. Attackers can send a Basic Authorization value lacking a colon, such as one decoding to a single character, to protected routes like /router/get_user_type.cgi to kill the main Boa process and deny management interface access.

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-476 - NULL Pointer Dereference

Assigner

VulnCheck CNA under the mitre root

CNA scorecard B 84/100 over 6373 records in the last 180 days details

References

2 references

URL	Tags
https://github.com/lukadqq/netcore-router-public-…	third-party-advisory
https://www.vulncheck.com/advisories/netcore-nr25…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
Netcore	NR256CN	Affected: 0 , ≤ 1.5.140116 (custom)

Date Public

2026-10-16 00:00

Credits

Zhou Ao Yin Luxing Lu Fangzhou Liu Xin

Show details on NVD website

JSON

To clipboard

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CVE-2026-111712 (GCVE-0-2026-111712)

Vulnerability from cvelistv5 – Published: 2026-10-16 17:40 – Updated: 2026-10-16 18:19

Title

Netcore NR256CN through 1.5.140116 Authentication Bypass via CGI Path Prefix

Summary

Netcore NR256CN through 1.5.140116 contains an authentication bypass vulnerability that allows unauthenticated attackers to reach protected management CGI handlers by prefixing the URI with a public route. Attackers can request paths prefixed with l7_web_auth.cgi or an .ico route to invoke protected management handlers without credentials.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-16 18:18 UTC

CWE

CWE-288 - Authentication Bypass Using an Alternate Path or Channel

Assigner

VulnCheck CNA under the mitre root

CNA scorecard B 84/100 over 6373 records in the last 180 days details

References

2 references

URL	Tags
https://github.com/lukadqq/netcore-router-public-…	third-party-advisory
https://www.vulncheck.com/advisories/netcore-nr25…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
Netcore	NR256CN	Affected: 0 , ≤ 1.5.140116 (custom)

Date Public

2026-10-16 00:00

Credits

Zhou Ao Yin Luxing Lu Fangzhou Liu Xin

Show details on NVD website

JSON

To clipboard

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          "value": "Netcore NR256CN through 1.5.140116 contains an authentication bypass vulnerability that allows unauthenticated attackers to reach protected management CGI handlers by prefixing the URI with a public route. Attackers can request paths prefixed with l7_web_auth.cgi or an .ico route to invoke protected management handlers without credentials."
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CVE-2026-111711 (GCVE-0-2026-111711)

Vulnerability from cvelistv5 – Published: 2026-10-16 17:40 – Updated: 2026-10-16 21:16

Title

Netcore NR256CN through 1.5.140116 Pre-Auth Stack Overflow via Boa user_ok()

Summary

Netcore NR256CN through 1.5.140116 contains a pre-authentication stack overflow vulnerability in the Boa web server's user_ok() function, which copies Basic-auth usernames with unbounded strcpy() calls into 64-byte stack buffers. Unauthenticated attackers can send a username longer than 63 bytes to any protected /router/*.cgi route to crash the main Boa process or potentially execute code.

Severity

9.3 (Critical)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-16 20:53 UTC

CWE

CWE-121 - Stack-based Buffer Overflow

Assigner

VulnCheck CNA under the mitre root

CNA scorecard B 84/100 over 6373 records in the last 180 days details

References

2 references

URL	Tags
https://github.com/lukadqq/netcore-router-public-…	third-party-advisory
https://www.vulncheck.com/advisories/netcore-nr25…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
Netcore	NR256CN	Affected: 0 , ≤ 1.5.140116 (custom)

Date Public

2026-10-16 00:00

Credits

Zhou Ao Yin Luxing Lu Fangzhou Liu Xin

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2026-111711",
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CVE-2026-111710 (GCVE-0-2026-111710)

Vulnerability from cvelistv5 – Published: 2026-10-16 17:40 – Updated: 2026-10-16 17:40

Title

Netcore NR256CN through 1.5.140116 Boa Web Server NULL Pointer Dereference DoS

Summary

Netcore NR256CN through 1.5.140116 contains a NULL pointer dereference vulnerability in the Boa web server's user_auth() function that allows unauthenticated attackers to crash the server via a malformed Authorization header. Attackers can send a Basic Authorization value lacking a colon, such as one decoding to a single character, to protected routes like /router/get_user_type.cgi to kill the main Boa process and deny management interface access.

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-476 - NULL Pointer Dereference

Assigner

VulnCheck CNA under the mitre root

CNA scorecard B 84/100 over 6373 records in the last 180 days details

References

2 references

URL	Tags
https://github.com/lukadqq/netcore-router-public-…	third-party-advisory
https://www.vulncheck.com/advisories/netcore-nr25…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
Netcore	NR256CN	Affected: 0 , ≤ 1.5.140116 (custom)

Date Public

2026-10-16 00:00

Credits

Zhou Ao Yin Luxing Lu Fangzhou Liu Xin

Show details on NVD website

JSON

To clipboard

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Find a vulnerability

Search criteria

6 vulnerabilities found for NR256CN by Netcore

CVE-2026-111712 (GCVE-0-2026-111712)

CVE-2026-111711 (GCVE-0-2026-111711)

CVE-2026-111710 (GCVE-0-2026-111710)

CVE-2026-111712 (GCVE-0-2026-111712)

CVE-2026-111711 (GCVE-0-2026-111711)

CVE-2026-111710 (GCVE-0-2026-111710)