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

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
n/a n/a affected
Version Status Constraints
n/a affected —

No data.

No data.

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Vendors Products
Totolink Subscribe
T6 Subscribe

Project Subscriptions

Vendors Products
Totolink Subscribe
T6 Subscribe
Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

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

Mon, 31 Aug 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}

Mon, 31 Aug 2026 19:15:00 +0000

Type Values Removed Values Added
Title Unauthenticated Removal of Firewall Rules via delIpPortFilterRules in TOTOLINK T6
Weaknesses CWE-284

Mon, 31 Aug 2026 18:45:00 +0000

Type Values Removed Values Added
First Time appeared Totolink
Totolink t6
Vendors & Products Totolink
Totolink t6

Mon, 31 Aug 2026 17:00:00 +0000

Type Values Removed Values Added
Description Incorrect access control in the delIpPortFilterRules function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to remove firewall filter rules via sending a crafted POST request to /cgi-bin/cstecgi.cgi.
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-08-31T18:58:30.545Z

Reserved: 2026-06-08T00:00:00.000Z

Link: CVE-2026-51720

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-31T17:17:41.523

Modified: 2026-08-31T19:16:49.540

Link: CVE-2026-51720

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-31T19:00:04Z

Weaknesses