CVE-2026-51730: Access Control Flaw (CVSS 9.1)

Description

Incorrect access control in the delWiFiAclRules function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to remove Wi-Fi ACL rules via sending a crafted POST request to /cgi-bin/cstecgi.cgi.

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CVSS v3.1 Score

9.1

CRITICAL

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

Weakness Type (CWE)

CWE-284 CWE-284

References

Other References

https://github.com/DarkBoulder/CVE-Vendor-Coordination/blob/main/TOTOLINK/README.md https://github.com/ShengWu00/CVE-Vendor-Coordination/blob/main/TOTOLINK/README.md https://www.totolink.net/ https://www.totolink.net/home/menu/detail/menu_listtpl/download/id/190/ids/36.html

Frequently Asked Questions

What is CVE-2026-51730? +

Incorrect access control in the delWiFiAclRules function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to remove Wi-Fi ACL rules via sending a crafted POST request to /cgi-bin/cstecgi.cgi. It has a CVSS v3.1 base score of 9.1 (CRITICAL).

How severe is CVE-2026-51730? +

CVE-2026-51730 has a CVSS v3.1 score of 9.1 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

How do I check if I'm vulnerable to CVE-2026-51730? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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