High Cryptography

CVE-2026-29988 — Cleartext Transmission of Sensitive Information in Milesight AM102/102L V2

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.

Published Aug 26, 2026 · Updated Oct 15, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: mitre

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

Technical severity (high)+6

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

—

No EPSS score.

Affects

Milesight

AM102/102L V2 and 63 more

CVSS base

7.6

High · 2 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation

None

none · proof-of-concept · active

Automatable

can an attacker script the kill-chain steps

Technical impact

Total

partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Milesight AM102/102L V2, Milesight AM103/103L V2, Milesight AM304L…).
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
Search available logs for exploit probes matching the vulnerability class (cryptography), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Milesight	AM102/102L V2	≤ 1.4	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	AM103/103L V2	≤ 1.8	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	AM304L	≤ 1.2	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	AM305L	≤ 1.2	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	AM307 V2	≤ 1.4	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	AM308	≤ 1.7	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	AM308L	≤ 1.7	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	AM319	≤ 1.6	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	AT101	≤ 1.2	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	EM300-DI	≤ 1.3	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	EM300-MCS V3	≤ 1.10	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	EM300-MLD V3	≤ 1.10	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	EM300-SLD V3	≤ 1.10	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	EM300-TH V3	≤ 1.10	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	EM300-ZLD V3	≤ 1.10	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	EM320-TH	≤ 1.6	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	EM320-TILT	≤ 1.3	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	EM400-MUD LoRaWAN®	≤ 1.2	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	EM400-MUD NB-IoT	≤ 1.6	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	EM400-TLD LoRaWAN®	≤ 1.2	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	EM400-TLD NB-IoT	≤ 1.5	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	EM400-UDL LoRaWAN®	≤ 1.2	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	EM410-RDL Cellular	≤ 1.1	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	EM411-RDL	≤ 1.2	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	EM500-CO2 V2	≤ 1.11	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	EM500-LGT	≤ 1.11	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	EM500-PP	≤ 1.11	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	EM500-PT100 V2	≤ 1.11	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	EM500-SMTC	≤ 1.11	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	EM500-SWL	≤ 1.11	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	EM500-UDL	≤ 1.11	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	GS301	≤ 1.2	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	TS201 V2	≤ 1.1	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	TS30x V2	≤ 1.1	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	UC501	≤ 1.6	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	UC502	≤ 1.6	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	UC511 V4	≤ 1.6	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	UC512 V4	≤ 1.6	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	UC521 Cellular	≤ 1.3	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	UC521 LoRaWAN®	≤ 1.2	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	VS321	≤ 321.1.0.1-r5	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	VS330	≤ 1.3	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	VS340	≤ 1.1	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	VS341	≤ 1.1	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	VS350 V3	≤ 1.1	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	VS351	≤ 1.5	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	VS360	≤ 1.2-r1	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	VS370	≤ 1.1	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	WS101	≤ 1.5	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	WS136	≤ 1.6	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	WS156	≤ 1.6	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	WS201	≤ 1.2	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	WS202	≤ 1.8	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	WS203	≤ 1.3	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	WS301	≤ 1.15	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	WS303	≤ 1.5	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	WS50X (2W-W11-EU) [501/502/503]	≤ 1.3	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	WS50X (3W-W11-EU) [501/502/503]	≤ 1.2	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	WS50X (3W-W12-EU) [501/502/503]	≤ 1.2	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	WS51X [513/515]	≤ 1.9	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	WS52X [523/525]	≤ 1.12	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	WS558	≤ 1.1	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	WT201 V2	≤ 1.5	Vulnerable	CVE Program (cve.org) e CISA ADP
Milesight	WT211 V2	≤ 1.5	Vulnerable	CVE Program (cve.org) e CISA ADP

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector

Physical

Attack complexity

Low

Privileges required

None

User interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Scored by
8.3	CVSS 4.0	High	—	—	cve@mitre.org via NIST National Vulnerability Database
8.3	CVSS 4.0	High	—	—	mitre via CVE Program (cve.org) e CISA ADP
7.6	CVSS 3.1	High	0.9	6.0	cve@mitre.org via NIST National Vulnerability Database
7.6	CVSS 3.1	High	—	—	mitre via CVE Program (cve.org) e CISA ADP

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H (score shown at the top: cve@mitre.org)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-319 · Cleartext Transmission of Sensitive Information

Other CVEs with this weakness →

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Local/physical vector: focus on endpoint telemetry (EDR) from affected hosts.
Check TLS negotiations and unexpected certificates in the component’s traffic.

endpoint telemetry (EDR)network IDS/IPS

Timeline

What happened to this CVE, newest first.

2026
Affected products added · milesight/am102/102l v2, milesight/am103/103l v2, milesight/am304l, milesight/am305l, milesight/am307 v2, milesight/am30
Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
SSVC assessment updated
Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
Record published
Oct 15, 2026
CVSS changed · 7.6
Oct 15, 2026 · NIST National Vulnerability Database
Source status changed · → Deferred
Oct 15, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 15, 2026 · NIST National Vulnerability Database
CVE published
Aug 26, 2026 · mitre

Source activity

Repeated readings are counted rather than listed.

1× Official description updated · Oct 15, 2026 – Oct 15, 2026

References

1 on the record

www.milesight.com/legal/vulnerabilities-in-some-milesight-sensors
vendor-advisory, mitigation, NIST National Vulnerability Database

Elsewhere on this site

Milesight
every CVE for this vendor

Cryptography
same class

CWE-319
other pages naming this weakness

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No FIRST EPSS score.
No fixed version, patch or mitigation documented.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-29988 is "Cleartext Transmission of Sensitive Information in Milesight AM102/102L V2", rated High. It affects AM102/102L V2 (Milesight); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 7.6 describes technical severity. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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