Improper validation of certificate with host mismatch in the MQTT client TLS connection layer in AWS IoT Device SDK for Python 1.5.3 through 1.6.0 on Python 3.7 and later might allow an adversary-in-the-middle actor to impersonate the AWS IoT Core endpoint, read device telemetry, and inject arbitrary MQTT messages that the device processes as authentic, via a certificate issued for an unrelated hostname by a certificate authority present in the device trust store.
To remediate this issue, users should upgrade to version 1.6.1.
To remediate this issue, users should upgrade to version 1.6.1.
Metrics
Affected Vendors & Products
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Thu, 17 Sep 2026 19:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Improper validation of certificate with host mismatch in the MQTT client TLS connection layer in AWS IoT Device SDK for Python 1.5.3 through 1.6.0 on Python 3.7 and later might allow an adversary-in-the-middle actor to impersonate the AWS IoT Core endpoint, read device telemetry, and inject arbitrary MQTT messages that the device processes as authentic, via a certificate issued for an unrelated hostname by a certificate authority present in the device trust store. To remediate this issue, users should upgrade to version 1.6.1. | |
| Title | Improper validation of certificate with host mismatch in AWS IoT Device SDK for Python | |
| First Time appeared |
Aws
Aws awsiotpythonsdk |
|
| Weaknesses | CWE-297 | |
| CPEs | cpe:2.3:a:aws:awsiotpythonsdk:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Aws
Aws awsiotpythonsdk |
|
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: AMZN
Published:
Updated: 2026-09-17T19:57:09.515Z
Reserved: 2026-09-17T12:43:02.381Z
Link: CVE-2026-92943
No data.
Status : Received
Published: 2026-09-17T20:18:59.333
Modified: 2026-09-17T20:18:59.333
Link: CVE-2026-92943
No data.
OpenCVE Enrichment
No data.
Weaknesses