Vulnerability record/PUBLISHED/Published Nov 13, 2026 09:36:57 UTC

CVE-2026-75489

Cudy TR3000 before 2.5.42 contains an insufficient verification of data authenticity vulnerability in the mt_wifi Smart Mesh Technology (SMT) onboarding, which protects messages only with an AES-CBC key derived from public values and a CRC32 check. Adjacent unauthenticated attackers can forge SMT messages in Probe Request vendor IEs carrying an attacker-chosen SSID and pre-shared key, forcing unpaired devices to join attacker-controlled access points.

Base score6.1/ 10

SeverityMediumCVSS 4.0

Exploitability / impact

CVSS metric breakdown

Vector-derived attributes

Base severityMedium

Attack vectorAdjacentAV

Attack complexityHighAC

Attack requirementsPresentAT

Privileges requiredNonePR

User interactionNoneUI

Vulnerable system confidentialityNoneVC

Vulnerable system integrityHighVI

Vulnerable system availabilityHighVA

Subsequent system confidentialityNoneSC

Subsequent system integrityNoneSI

Subsequent system availabilityNoneSA

CVSS vector stringCVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS communicates standardized severity and impact characteristics. It does not establish whether a system is exploitable in your specific environment.

Record context

CVE Numbering AuthorityVulnCheck

Last updatedNov 13, 2026 15:52:55 UTC

PublishedNov 13, 2026 09:36:57 UTC

ReservedAug 17, 2026 20:07:25 UTC