CVE-2026-29988

A cleartext transmission of sensitive information vulnerability in the NFC interface of multiple Milesight IoT device models running affected firmware versions allows an unauthenticated attacker with physical proximity to retrieve LoRaWAN ABP NwkSKey and AppSKey values and D2D keys via an NFC read operation. The exposed keys can be used to decrypt LoRaWAN traffic, forge uplink and downlink frames, submit falsified sensor data, issue supported device commands, and cause subsequent legitimate frames to be rejected.

CVSS v3 7.6 HIGH

7.6^/10

CVSS v3 : HIGH

Vector :

Exploitability : 0.9 / Impact : 6.0

Attack Vector PHYSICAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://www.milesight.com/legal/vulnerabilities-in-some-milesight-sensors

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-26 05:18

Updated : 2026-09-09 16:04

NVD link : CVE-2026-29988

Mitre link : CVE-2026-29988

CVE.ORG link : CVE-2026-29988

JSON object : View

Products Affected

No product.

CWE

CWE-319

Cleartext Transmission of Sensitive Information

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"custom", "lessThanOrEqual": "1.5"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "WS136", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.6"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "WS156", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.6"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "WS201", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.2"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "WS202", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.8"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "WS203", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.3"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "WS301", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.15"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "WS303", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.5"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "WS50X (2W-W11-EU) [501/502/503]", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.3"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "WS50X (3W-W11-EU) [501/502/503]", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.2"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "WS50X (3W-W12-EU) [501/502/503]", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.2"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "WS51X [513/515]", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.9"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "WS52X [523/525]", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.12"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "WS558", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.1"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "VS321", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "321.1.0.1-r5"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "VS360", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.2-r1"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "VS350 V3", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.1"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "VS351", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.5"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "VS330", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.3"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "VS340", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.1"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "VS341", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.1"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "VS370", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.1"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "GS301", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.2"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "EM300-TH V3", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.10"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "EM320-TH", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.6"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "TS201 V2", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.1"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "TS30x V2", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.1"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "WT201 V2", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.5"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "WT211 V2", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.5"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "UC501", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.6"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "UC502", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.6"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "UC511 V4", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.6"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "UC512 V4", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.6"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "UC521 LoRaWAN\u00ae", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.2"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "UC521 Cellular", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.3"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "EM300-DI", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.3"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "EM300-MCS V3", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.10"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "EM300-MLD V3", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.10"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "EM300-SLD V3", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.10"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "EM300-ZLD V3", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.10"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "EM320-TILT", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.3"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "EM400-TLD LoRaWAN\u00ae", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.2"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "EM400-TLD NB-IoT", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.5"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "EM400-MUD LoRaWAN\u00ae", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.2"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "EM400-MUD NB-IoT", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.6"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "EM400-UDL LoRaWAN\u00ae", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.2"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "EM410-RDL Cellular", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.1"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "EM411-RDL", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.2"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "EM500-CO2 V2", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.11"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "EM500-SWL", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.11"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "EM500-LGT", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.11"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "EM500-PT100 V2", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.11"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "EM500-PP", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.11"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "EM500-SMTC", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.11"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "EM500-UDL", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.11"}], "defaultStatus": "unaffected"}, {"vendor": "Milesight", "product": "AT101", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "1.2"}], "defaultStatus": "unaffected"}]}], "published": "2026-08-26T05:18:07.543", "references": [{"url": "https://www.milesight.com/legal/vulnerabilities-in-some-milesight-sensors", "source": "cve@mitre.org"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "cve@mitre.org", "description": [{"lang": "en", "value": "CWE-319"}]}], "descriptions": [{"lang": "en", "value": "A cleartext transmission of sensitive information vulnerability in the NFC interface of multiple Milesight IoT device models running affected firmware versions allows an unauthenticated attacker with physical proximity to retrieve LoRaWAN ABP NwkSKey and AppSKey values and D2D keys via an NFC read operation. The exposed keys can be used to decrypt LoRaWAN traffic, forge uplink and downlink frames, submit falsified sensor data, issue supported device commands, and cause subsequent legitimate frames to be rejected."}], "lastModified": "2026-09-09T16:04:24.933", "sourceIdentifier": "cve@mitre.org"}