Description
Incorrect access control in the getWiFiEasyCfg function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to obtain sensitive information such as SSIDs and Wi-Fi keys, 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: Remote Information Disclosure
Action: Patch or Block
AI Analysis

Impact

The getWiFiEasyCfg function in TOTOLINK T6 firmware 4.1.5cu.748_B20211015 contains an improper access control flaw that allows attackers without authentication to send a crafted POST request to /cgi-bin/cstecgi.cgi and retrieve SSID and Wi‑Fi password. The disclosure permits attackers to obtain sensitive network credentials. The weakness aligns with CWE-284, improper access control.

Affected Systems

TOTOLINK T6 routers running firmware version 4.1.5cu.748_B20211015 are affected.

Risk and Exploitability

Unauthenticated attackers can send a crafted POST request to /cgi-bin/cstecgi.cgi to retrieve SSID and Wi‑Fi password. The vulnerability's CVSS score of 7.5 reflects its severity, and the EPSS score of < 1% indicates low exploitation probability. The flaw is not listed in the CISA KEV catalog.

Generated by OpenCVE AI on September 2, 2026 at 08:26 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade TOTOLINK router firmware to the latest release that addresses the information disclosure flaw.
  • If an update is unavailable, block access to /cgi-bin/cstecgi.cgi or disable the Wi‑Fi Easy Config feature using firewall or router ACL rules.
  • Disable Wi‑Fi Easy Config entirely or configure it to require authentication before use.
  • Ensure the Wi‑Fi SSID and password are strong, unique, and changed periodically.
  • Monitor network traffic for unexpected POST requests to cstecgi.cgi to detect exploitation attempts.

Generated by OpenCVE AI on September 2, 2026 at 08:26 UTC.

Tracking

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Advisories

No advisories yet.

History

Wed, 02 Sep 2026 08:45:00 +0000

Type Values Removed Values Added
Title Unauthenticated Retrieval of Wi‑Fi Credentials via getWiFiEasyCfg in TOTOLINK T6

Wed, 02 Sep 2026 07:00:00 +0000

Type Values Removed Values Added
Title Unauthenticated Information Disclosure in TOTOLINK T6 Wi‑Fi Configuration
Weaknesses CWE-200

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 22:45:00 +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 Information Disclosure in TOTOLINK T6 Wi‑Fi Configuration
Weaknesses CWE-200
CWE-284

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

Type Values Removed Values Added
Description Incorrect access control in the getWiFiEasyCfg function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to obtain sensitive information such as SSIDs and Wi-Fi keys, via sending a crafted POST request to /cgi-bin/cstecgi.cgi.
References

Subscriptions

Totolink T6
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-09-01T16:13:50.329Z

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

Link: CVE-2026-51625

cve-icon Vulnrichment

Updated: 2026-09-01T15:17:15.747Z

cve-icon NVD

Status : Deferred

Published: 2026-08-28T20:18:05.713

Modified: 2026-09-01T17:17:27.503

Link: CVE-2026-51625

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-02T08:30:13Z

Weaknesses