7.5High
CVE-2026-115417Memory allocation with excessive size value in the MQTT 3.1.1 compatibility adapter in aws-c-mqtt
Description
Memory allocation with excessive size value in the MQTT 3.1.1 compatibility adapter in AWS aws-c-mqtt before 0.16.2 might allow a remote actor to cause a denial of service of the client application. To remediate this issue, users should upgrade to aws-c-mqtt 0.16.2 or later, or to an AWS Common Runtime or AWS IoT Device SDK release that bundles it.
Weakness (CWE):
CWE-789
Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.
Affected products and versions
| Vendor | Product | Versions | |
|---|---|---|---|
| AWS | aws-c-mqtt | 0.9.1 – < 0.16.2 |
References and patches
- https://github.com/awslabs/aws-c-mqtt/releases/tag/v0.16.2 release-notespatch
- https://github.com/awslabs/aws-c-mqtt/security/advisories/GHSA-g3x5-86mr-65p5 third-party-advisory
- https://aws.amazon.com/security/security-bulletins/2026-147-aws/ vendor-advisory