Vulnerability · Published Sep 3, 2026 · Assigned by AMZN

CVE-2026-85028Creation of Temporary File in Directory with Insecure Permissions in AWS FPGA Development Kit

High 7.8

In plain English

A high-severity security flaw in aws-fpga from AWS. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities).

Severity (CVSS 3.1)7.8High

Exploit odds (30 days)0.2%top 93.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
AWS	aws-fpga	0 – before 2.3.4

Weakness: CWE-379 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

https://github.com/aws/aws-fpga/releases/tag/v2.3.4 release-notes, patch
https://aws.amazon.com/security/security-bulletins/2026-096-aws/ vendor-advisory
https://github.com/aws/aws-fpga/security/advisories/GHSA-g4hc-wrmm-2x74 release-notes