CVE-2026-115417
highMemory 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 denia…
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.
CVSS
7.5
7.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Severity source: NVD CVSS v3.1 (ff89ba41-3aa1-4d27-914a-91399e9639e5)
Timeline (UTC)
Published: 2026-10-22 21:17
Modified: 2026-10-29 02:16
NVD status: Awaiting Analysis
Last synced 2 hours ago
Verified against the source API 2026-10-29 02:35 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://aws.amazon.com/security/security-bulletins/2026-147-aws/ ff89ba41-3aa1-4d27-914a-91399e9639e5
- https://github.com/awslabs/aws-c-mqtt/releases/tag/v0.16.2 ff89ba41-3aa1-4d27-914a-91399e9639e5
- https://github.com/awslabs/aws-c-mqtt/security/advisories/GHSA-g3x5-86mr-65p5 ff89ba41-3aa1-4d27-914a-91399e9639e5
Data sources
NVD CVE API 2.0 — fetched 2026-10-29 02:35 UTC · record ↗