CVE-2026-51742

Incorrect access control in the discoverWan function of TOTOLINK T6 4.1.5cu.748_B20211015 allows...

5.9 Medium

Incorrect access control in the discoverWan function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to trigger WAN discovery logic via sending a crafted POST request to /cgi-bin/cstecgi.cgi.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: High
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: None
Availability: None

Exploit likelihood

0.43%Up 0.1 points since Sep 2, 2026

What each source reports

CVE List Score used5.9

Record: CVE-2026-51742
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-284
Updated: 2026-11-02

EUVDEUVD-2026-692115.9

Record: EUVD-2026-69211
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-fhqw-9mv9-g6cr5.9

Incorrect access control in the discoverWan function of TOTOLINK T6 4.1.5cu.748_B20211015 allows...

Record: GHSA-fhqw-9mv9-g6cr
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-284
Updated: 2026-11-02

NVD5.9

Record: CVE-2026-51742
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-284
Updated: 2026-11-02

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-51742 is a medium vulnerability (CVSS 5.9), published September 1, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.43%, the 38th percentile. No source names a fixed version.