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CVE-2024-27303— electron-builder's NSIS installer - execute arbitrary code on the target machine (Windows only)

Quick assessment

Affected
electron-userland electron-builder
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

electron-builder是一个用于打包和构建可供分发的Electron、Proton Native应用程序，适用于 macOS、Windows 和 Linux，并提供开箱即用的“自动更新”支持。 electron-builder 24.13.2之前版本存在安全漏洞，该漏洞源于如果攻击者可以将名为cmd.exe的恶意可执行文件放置在与安装程序相同的文件夹中，安装程序将运行恶意文件。

CVSS 7.3 · High EPSS 0.28% · P19

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2024-27303

Vulnerability Information
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Vulnerability Title
electron-builder's NSIS installer - execute arbitrary code on the target machine (Windows only)
Source: CVE Program / CVE List V5
Vulnerability Description
electron-builder is a solution to package and build a ready for distribution Electron, Proton Native app for macOS, Windows and Linux. A vulnerability that only affects eletron-builder prior to 24.13.2 in Windows, the NSIS installer makes a system call to open cmd.exe via NSExec in the `.nsh` installer script. NSExec by default searches the current directory of where the installer is located before searching `PATH`. This means that if an attacker can place a malicious executable file named cmd.exe in the same folder as the installer, the installer will run the malicious file. Version 24.13.2 fixes this issue. No known workaround exists. The code executes at the installer-level before the app is present on the system, so there's no way to check if it exists in a current installer.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不可信的搜索路径
Source: CVE Program / CVE List V5
Vulnerability Title
electron-builder 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
electron-builder是一个用于打包和构建可供分发的Electron、Proton Native应用程序，适用于 macOS、Windows 和 Linux，并提供开箱即用的“自动更新”支持。 electron-builder 24.13.2之前版本存在安全漏洞，该漏洞源于如果攻击者可以将名为cmd.exe的恶意可执行文件放置在与安装程序相同的文件夹中，安装程序将运行恶意文件。
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
electron-userland electron-builder < 24.13.2 -

II. Public POCs for CVE-2024-27303

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 10140 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2024-27303

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Patches & Fixes for CVE-2024-27303 (2)

Vendor Advisories for CVE-2024-27303 (1)

IV. Related Vulnerabilities

Same product: electron-builder
Same vendor: electron-userland
Same weakness: CWE-426

V. Comments for CVE-2024-27303

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