CVE-2026-29988

Severity: high (CVSS 7.6 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-26 · updated 2026-09-09
Weakness: CWE-319

Description

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.

Affected products

Milesight AM102/102L V2: through 1.4
Milesight AM103/103L V2: through 1.8
Milesight AM304L: through 1.2
Milesight AM305L: through 1.2
Milesight AM307 V2: through 1.4
Milesight AM308: through 1.7
Milesight AM308L: through 1.7
Milesight AM319: through 1.6
Milesight AT101: through 1.2
Milesight EM300-DI: through 1.3
Milesight EM300-MCS V3: through 1.10
Milesight EM300-MLD V3: through 1.10
Milesight EM300-SLD V3: through 1.10
Milesight EM300-TH V3: through 1.10
Milesight EM300-ZLD V3: through 1.10
Milesight EM320-TH: through 1.6
Milesight EM320-TILT: through 1.3
Milesight EM400-MUD LoRaWAN®: through 1.2
Milesight EM400-MUD NB-IoT: through 1.6
Milesight EM400-TLD LoRaWAN®: through 1.2
Milesight EM400-TLD NB-IoT: through 1.5
Milesight EM400-UDL LoRaWAN®: through 1.2
Milesight EM410-RDL Cellular: through 1.1
Milesight EM411-RDL: through 1.2
Milesight EM500-CO2 V2: through 1.11
Milesight EM500-LGT: through 1.11
Milesight EM500-PP: through 1.11
Milesight EM500-PT100 V2: through 1.11
Milesight EM500-SMTC: through 1.11
Milesight EM500-SWL: through 1.11

References

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

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