What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-03 · updated 2026-09-08
• Weakness: CWE-379

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

• aws-fpga: before 2.3.4 — fixed in 2.3.4

How to fix

Upgrade to a fixed version: aws-fpga 2.3.4. Check the vendor advisory for mitigations.

References

• https://aws.amazon.com/security/security-bulletins/2026-096-aws/
• https://github.com/aws/aws-fpga/releases/tag/v2.3.4
• https://github.com/aws/aws-fpga/security/advisories/GHSA-g4hc-wrmm-2x74

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