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CVE-2025-14265— Improper server-side validation in ScreenConnect extension framework

Quick assessment

Affected
ConnectWise ScreenConnect
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.

ConnectWise ScreenConnect是ConnectWise公司的一种自托管远程桌面软件应用程序。 ConnectWise ScreenConnect 25.8之前版本存在安全漏洞，该漏洞源于扩展子系统验证不足，可能导致执行任意代码。

CVSS 9.1 · Critical EPSS 0.37% · P28
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I. Basic Information for CVE-2025-14265

Vulnerability Information
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Vulnerability Title
Improper server-side validation in ScreenConnect extension framework
Source: CVE Program / CVE List V5
Vulnerability Description
In versions of ScreenConnect™ prior to 25.8, server-side validation and integrity checks within the extension subsystem could allow the installation and execution of untrusted or arbitrary extensions by authorized or administrative users. Abuse of this behavior could result in the execution of custom code on the server or unauthorized access to application configuration data. This issue affects only the ScreenConnect server component; host and guest clients are not impacted. ScreenConnect 25.8 introduces enhanced server-side configuration handling and integrity checks to ensure only trusted extensions can be installed.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
下载代码缺少完整性检查
Source: CVE Program / CVE List V5
Vulnerability Title
ConnectWise ScreenConnect 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ConnectWise ScreenConnect是ConnectWise公司的一种自托管远程桌面软件应用程序。 ConnectWise ScreenConnect 25.8之前版本存在安全漏洞，该漏洞源于扩展子系统验证不足，可能导致执行任意代码。
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
ConnectWise ScreenConnect All versions prior to 2025.8 -

II. Public POCs for CVE-2025-14265

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III. Intelligence Information for CVE-2025-14265

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Other References for CVE-2025-14265 (1)

IV. Related Vulnerabilities

Same product: ScreenConnect
Same vendor: ConnectWise
Same weakness: CWE-494

V. Comments for CVE-2025-14265

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