CVE-2026-115417
Memory allocation with excessive size value in the MQTT 3.1.1 compatibility adapter in aws-c-mqtt
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-789 |
| Vendor | aws |
| Product | aws-c-mqtt |
| Published | Oct 22, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
AWS / aws-c-mqtt
0.9.1 < 0.16.2