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CVE-2026-84869— ScreenConnect Client: Guest-to-Host File Execution via File-Transfer Actions

Quick assessment

Affected
ConnectWise ScreenConnect
Exploitation
Confirmed exploitation in the wild; remediate immediately
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公司的一款远程支持软件。 ConnectWise ScreenConnect 26.6.5之前版本存在安全漏洞，该漏洞源于权限验证不当，可能导致在未经授权或主机确认的情况下，通过活动远程会话传输和执行文件。

CVSS 9.9 · Critical KEV EPSS 0.69% · P51

Affected Version Matrix 1

VendorProduct Version RangeStatus
ConnectWise ScreenConnect All versions prior to 26.6.5 affected
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I. Basic Information for CVE-2026-84869

Vulnerability Information
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Vulnerability Title
ScreenConnect Client: Guest-to-Host File Execution via File-Transfer Actions
Source: CVE Program / CVE List V5
Vulnerability Description
A condition in the ScreenConnect client may allow files to be transferred and executed through an active remote session without authorization or Host confirmation in certain circumstances. ScreenConnect servers are not impacted.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
ConnectWise ScreenConnect 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ConnectWise ScreenConnect是ConnectWise公司的一款远程支持软件。 ConnectWise ScreenConnect 26.6.5之前版本存在安全漏洞，该漏洞源于权限验证不当，可能导致在未经授权或主机确认的情况下，通过活动远程会话传输和执行文件。
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
ConnectWise ScreenConnect All versions prior to 26.6.5 -

II. Public POCs for CVE-2026-84869

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III. Intelligence Information for CVE-2026-84869

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Vendor Advisories for CVE-2026-84869 (3)

IV. Related Vulnerabilities

Same product: ScreenConnect
Same vendor: ConnectWise
Same weakness: CWE-862

V. Comments for CVE-2026-84869

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