Description
Incorrect access control in the getInitCfg function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to obtain sensitive device configuration information via sending a crafted POST request to /cgi-bin/cstecgi.cgi.
Published: 2026-08-28
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: Unauthorized device configuration disclosure
Action: Apply Mitigation
AI Analysis

Impact

The vulnerability involves an incorrect access control check in the getInitCfg function of TOTOLINK T6 firmware 4.1.5cu.748_B20211015. An unauthenticated attacker who sends a crafted POST request to /cgi-bin/cstecgi.cgi can retrieve sensitive configuration information without needing valid credentials.

Affected Systems

The affected device is the TOTOLINK T6 router running firmware version 4.1.5cu.748_B20211015. No other vendors or product versions are listed in the vulnerability report, so remediation efforts should focus on this specific hardware/firmware combination.

Risk and Exploitability

Since the CVSS score is 7.5 and the EPSS score is below 1%, the vulnerability is considered high severity with a low probability of exploitation, and it is not listed in the CISA KEV catalog. The attack vector is network based, relying on an unauthenticated POST request to a publicly reachable CGI endpoint. The flaw allows attackers to retrieve sensitive configuration information without valid credentials.

Generated by OpenCVE AI on September 2, 2026 at 06:06 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Update TOTOLINK T6 firmware to a version that fixes the getInitCfg access control flaw.
  • Restrict or block access to /cgi-bin/cstecgi.cgi on the device, either by firewall rules or by disabling remote management interfaces.
  • Monitor router logs for suspicious POST requests to /cgi-bin/cstecgi.cgi and investigate any unauthorized activity.

Generated by OpenCVE AI on September 2, 2026 at 06:06 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Wed, 02 Sep 2026 06:30:00 +0000

Type Values Removed Values Added
Title Unauthenticated Access to Device Configuration via getInitCfg Function in TOTOLINK T6 4.1.5cu.748_B20211015

Tue, 01 Sep 2026 22:00:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Fri, 28 Aug 2026 21:15:00 +0000

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

Fri, 28 Aug 2026 21:00:00 +0000

Type Values Removed Values Added
Title Unauthenticated Access to Device Configuration via getInitCfg Function in TOTOLINK T6 4.1.5cu.748_B20211015
Weaknesses CWE-284

Fri, 28 Aug 2026 19:45:00 +0000

Type Values Removed Values Added
Description Incorrect access control in the getInitCfg function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to obtain sensitive device configuration information via sending a crafted POST request to /cgi-bin/cstecgi.cgi.
References

Subscriptions

Totolink T6
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-09-01T16:14:20.467Z

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

Link: CVE-2026-51621

cve-icon Vulnrichment

Updated: 2026-09-01T15:23:26.071Z

cve-icon NVD

Status : Deferred

Published: 2026-08-28T20:18:05.287

Modified: 2026-09-01T17:17:26.840

Link: CVE-2026-51621

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-02T06:15:04Z

Weaknesses