What is the CVSS score of CVE-2026-51703?

CVE-2026-51703 has a CVSS 3.1 base score of 5.4 (Medium). CVSS vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L. EPSS exploitation probability: 0.2%.

TOTOLINK T6 CVE-2026-51703

EUVD-2026-68646 MEDIUM

Improper Access Control (CWE-284)

2026-08-31 mitre

GHSA-7jx9-f3qx-hc3f

Authentication Bypass

5.4

CVSS 3.1 · Vendor: mitre

Severity by source

Vendor (mitre) PRIMARY

5.4 MEDIUM

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

vuln.today AI

5.4 MEDIUM

Adjacent-only reach confirmed by CGI endpoint architecture; unauthenticated (PR:N); impact limited to Wi-Fi schedule integrity and availability with no confidentiality exposure.

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

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

Primary rating from Vendor (mitre).

CVSS VectorVendor: mitre

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

Low

Lifecycle Timeline

Metadata Corrected

Sep 01, 2026 - 17:40 vuln.today

tag: N A removed

Analysis Generated

Sep 01, 2026 - 17:39 vuln.today

CVSS changed

Sep 01, 2026 - 17:22 NVD

5.4 (MEDIUM)

CVE Published

Aug 31, 2026 - 00:00 cve.org

UNKNOWN (no severity yet)

DescriptionCVE.org

Incorrect access control in the setWiFiScheduleCfg function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to alter when Wi-Fi is available via sending a crafted POST request to /cgi-bin/cstecgi.cgi.

AnalysisAI

Unauthenticated access control bypass in TOTOLINK T6 router (firmware 4.1.5cu.748_B20211015) allows any attacker on the adjacent network to arbitrarily modify Wi-Fi scheduling via the setWiFiScheduleCfg handler. By sending a crafted POST to /cgi-bin/cstecgi.cgi without credentials, an attacker can suppress or extend wireless availability windows, causing service disruption for wireless clients. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Vulnerability AssessmentAI

Exploitation	The attacker must have adjacent network access - either a wired LAN connection or Wi-Fi association with the TOTOLINK T6. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment	The CVSS 5.4 Medium rating is well-calibrated for this vulnerability. … 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 has been identified at time of analysis for TOTOLINK T6 firmware 4.1.5cu.748_B20211015. … Detailed patch versions, workarounds, and compensating controls in full report.