CVE-2026-51756

MediumCVSS 5.9/10Last modified Sep 1, 2026

Description

Incorrect access control in the meshSlaveUpgfw function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to start firmware flashing using existing upgrade files via sending a crafted MQTT message to the cs_broker component.

Metrics

CVSS 3.1 5.9/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-284

Affected software

No affected versions have been published.

Timeline

Published
Sep 1, 2026
Last modified
Sep 1, 2026
NVD status
Deferred

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CVE-2026-51756: Medium severity, CVSS 5.9 | Vulnix