AWS FPGA Dev Kit 2.3.4 Temp File Priv Esc via Installation
CVE-2026-85028 Published on September 3, 2026
Creation of Temporary File in Directory with Insecure Permissions in AWS FPGA Development Kit
Creation of a temporary file in a directory with insecure permissions in the FPGA management tool installation component in AWS FPGA Development Kit (aws-fpga) before 2.3.4 might allow local users to execute arbitrary code with root privileges via crafted shell content placed at a predictable path in a world-writable temporary directory, which the installation step reads after elevating its own privileges.
To remediate this issue, users should upgrade to version 2.3.4.
Vulnerability Analysis
CVE-2026-85028 is exploitable with local system access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
Creation of Temporary File in Directory with Insecure Permissions
The software creates a temporary file in a directory whose permissions allow unintended actors to determine the file's existence or otherwise access that file. On some operating systems, the fact that the temporary file exists may be apparent to any user with sufficient privileges to access that directory. Since the file is visible, the application that is using the temporary file could be known. If one has access to list the processes on the system, the attacker has gained information about what the user is doing at that time. By correlating this with the applications the user is running, an attacker could potentially discover what a user's actions are. From this, higher levels of security could be breached.
Products Associated with CVE-2026-85028
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Affected Versions
aws-fpga:- Before 2.3.4 is affected.