CVEvulnerability
CVE-2026-92943
9.2 CRITICAL
Official page ↗
- Status
- Awaiting Analysis
- Published
- 2026-09-17
- Last modified
- 2026-09-18
- Assigner
- ff89ba41-3aa1-4d27-914a-91399e9639e5
- CVSS 4.0 (ff89ba41-3aa1-4d27-914a-91399e9639e5)
- 9.2 CRITICAL — CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- CVSS 3.1 (ff89ba41-3aa1-4d27-914a-91399e9639e5)
- 8.1 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-297
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.
Related
Weakness · CWE (1)
- CWE-297 Improper Validation of Certificate with Host Mismatch weakness
References
- https://aws.amazon.com/security/security-bulletins/2026-114-aws/ aws.amazon.com
- https://github.com/aws/aws-iot-device-sdk-python/releases/tag/v1.6.1 github.com
- https://github.com/aws/aws-iot-device-sdk-python/security/advisories/GHSA-g7vp-3rxx-v25r github.com
- https://pypi.org/project/AWSIoTPythonSDK/1.6.1/ pypi.org