RewindexCVEsAmazon Web Services
CVE-2026-115417: Memory allocation with excessive size value in the MQTT 3.1.1 compatibility adapter in aws-c-mqtt
High · CVSS 7.5 (CVSS 3.1)EPSS 0.35%, 28th percentilePublished Updated Assigner: AMZN
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.
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · CWE-789
Tracked companies
Mapped from the CVE’s affected-product data, NVD CPE matches, vendor advisories or package feeds. A mapping means the vendor’s software is named, not that its hosted service was exposed.
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
AWS: aws-c-mqtt
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- aws.amazon.com/security/security-bulletins/2026-147-aws/ (opens in new tab)
- github.com/awslabs/aws-c-mqtt/releases/tag/v0.16.2 (opens in new tab)
- github.com/awslabs/aws-c-mqtt/security/advisories/GHSA-g3x5-86mr-65p5 (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)