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

Quick assessment

Affected
AWS aws-fpga
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Amazon AWS F2是美国Amazon公司的一个FPGA硬件加速开发框架。 Amazon AWS F2 2.3.4之前版本存在权限许可和访问控制问题漏洞，该漏洞源于FPGA管理工具安装组件在权限不安全的目录中创建临时文件，本地用户可在可预测路径的全局可写临时目录中放置特制Shell内容，安装步骤在提升自身权限后读取该内容，导致以root权限执行任意代码。

CVSS 7.8 · High EPSS 0.12% · P2

Affected Version Matrix 1

VendorProduct Version RangeStatus
AWS aws-fpga < 2.3.4 affected
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I. Basic Information for CVE-2026-85028

Vulnerability Information
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Vulnerability Title
Creation of Temporary File in Directory with Insecure Permissions in AWS FPGA Development Kit
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在具有不安全权限的目录中创建临时文件
Source: CVE Program / CVE List V5
Vulnerability Title
Amazon AWS F2 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Amazon AWS F2是美国Amazon公司的一个FPGA硬件加速开发框架。 Amazon AWS F2 2.3.4之前版本存在权限许可和访问控制问题漏洞，该漏洞源于FPGA管理工具安装组件在权限不安全的目录中创建临时文件，本地用户可在可预测路径的全局可写临时目录中放置特制Shell内容，安装步骤在提升自身权限后读取该内容，导致以root权限执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
AWS aws-fpga 0 ~ 2.3.4 -

II. Public POCs for CVE-2026-85028

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III. Intelligence Information for CVE-2026-85028

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Vendor Advisories for CVE-2026-85028 (2)

Vendor Pages for CVE-2026-85028 (1)

IV. Related Vulnerabilities

Same vendor: AWS
Same weakness: CWE-379

V. Comments for CVE-2026-85028

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