What is the CVSS score of EUVD-2026-69211?

EUVD-2026-69211 has a CVSS 3.1 base score of 5.9 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N. EPSS exploitation probability: 0.3%.

TOTOLINK T6 EUVD-2026-69211

| CVE-2026-51742 MEDIUM

Improper Access Control (CWE-284)

2026-09-01 cve@mitre.org

GHSA-fhqw-9mv9-g6cr

Authentication Bypass

5.9

CVSS 3.1 · Vendor: mitre

Severity by source

Vendor (mitre) PRIMARY

5.9 MEDIUM

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

vuln.today AI

7.5 HIGH

Attack requires only a crafted POST request with no special conditions, so AC:L; PR:N and C:H confirmed by description; I:N and A:N as the function is read-only.

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

4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (mitre).

CVSS VectorVendor: mitre

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

Analysis Generated

Sep 01, 2026 - 19:42 vuln.today

CVSS changed

Sep 01, 2026 - 19:22 NVD

5.9 (MEDIUM)

CVE Published

Sep 01, 2026 - 13:19 cve.org

UNKNOWN (no severity yet)

DescriptionCVE.org

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.

AnalysisAI

Unauthenticated remote exploitation of the discoverWan function in TOTOLINK T6 firmware 4.1.5cu.748_B20211015 exposes WAN configuration data through a crafted POST request to the /cgi-bin/cstecgi.cgi endpoint. The CWE-284 (Improper Access Control) root cause means the CGI handler performs no authentication check before executing WAN discovery logic, returning configuration details to any network-reachable caller. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Vulnerability AssessmentAI

Exploitation	No authentication is required (PR:N per CVSS vector). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment	The NVD-assigned CVSS 5.9 (Medium) reflects AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation	No vendor-released patch or updated firmware has been identified in the available references at time of analysis. … Detailed patch versions, workarounds, and compensating controls in full report.