Milesight AT101 NFC Interface cleartext transmission

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.6$0-$5k0.63+

Summaryinfo

A vulnerability was found in Milesight AM102, AM103, AM304L, AM305L, AM307, AM308, AM308L, AM319, EM300-DI, EM300-MLD, EM300-SLD, EM300-TH, EM300-ZLD, EM320-TILT, EM320-TH, EM400-MUD, EM400-TLD, EM400-UDL, EM410-RDL, EM411-RDL, EM500-CO2, EM500-LGT, EM500-PP, EM500-PT100, EM500-SMTC, EM500-SWL, EM500-UDL, WS101, WS136, WS156, WS201, WS202, WS203, WS301, WS303, WS50X, WS51X, WS52X, WS558, VS321, VS330, VS340, VS341, VS350, VS351, VS360, VS370, WT201, WT211, UC501, UC502, UC511, UC512, UC521 and AT101. It has been declared as problematic. Affected by this issue is some unknown functionality of the component NFC Interface. Such manipulation leads to cleartext transmission. This vulnerability is referenced as CVE-2026-29988. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Milesight AM102, AM103, AM304L, AM305L, AM307, AM308, AM308L, AM319, EM300-DI, EM300-MLD, EM300-SLD, EM300-TH, EM300-ZLD, EM320-TILT, EM320-TH, EM400-MUD, EM400-TLD, EM400-UDL, EM410-RDL, EM411-RDL, EM500-CO2, EM500-LGT, EM500-PP, EM500-PT100, EM500-SMTC, EM500-SWL, EM500-UDL, WS101, WS136, WS156, WS201, WS202, WS203, WS301, WS303, WS50X, WS51X, WS52X, WS558, VS321, VS330, VS340, VS341, VS350, VS351, VS360, VS370, WT201, WT211, UC501, UC502, UC511, UC512, UC521 and AT101. Affected by this issue is some unknown processing of the component NFC Interface. The manipulation with an unknown input leads to a cleartext transmission vulnerability. Using CWE to declare the problem leads to CWE-319. The product transmits sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors. Impacted is confidentiality. CVE summarizes:

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.

The advisory is shared for download at milesight.com. This vulnerability is handled as CVE-2026-29988 since 03/04/2026. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/26/2026). The MITRE ATT&CK project declares the attack technique as T1040.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.6

VulDB Base Score: 3.7
VulDB Temp Score: 3.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.6
CNA Vector (MITRE): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cleartext transmission
CWE: CWE-319 / CWE-310
CAPEC: 🔒
ATT&CK: 🔒

Physical: Yes
Local: Partially
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

03/04/2026 CVE reserved
08/26/2026 +174 days Advisory disclosed
08/26/2026 +0 days VulDB entry created
08/26/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: milesight.com
Status: Not defined

CVE: CVE-2026-29988 (🔒)
GCVE (CVE): GCVE-0-2026-29988
GCVE (VulDB): GCVE-100-395660

Entryinfo

Created: 08/26/2026 06:07
Changes: 08/26/2026 06:07 (72)
Complete: 🔍
Cache ID: 216::103

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