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CVE-2026-84869

ScreenConnect Client: Guest-to-Host File Execution via File-Transfer Actions

CVSS 3.1 Critical 9.9Known exploited (CISA KEV)

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

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.

Official description from the CVE record, published by ConnectWise. Copyright © 1999-2026 The MITRE Corporation. See /security/cve/legal for the CVE license. View the record on cve.org

Key data

CVSS 3.1 Critical 9.9
Score published by ConnectWise in the CVE record.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

  • Attack vector: Network

    The vulnerable component can be reached over a network, possibly from the Internet.

  • Attack complexity: Low

    No special conditions are needed. The attack can be repeated at will.

  • Privileges required: Low

    A basic user account is needed.

  • User interaction: None

    No action from any user is needed.

  • Scope: Changed

    The impact can reach other components beyond the vulnerable one.

  • Confidentiality impact: High

    Serious or total effect on the secrecy of data.

  • Integrity impact: High

    Serious or total effect on the trustworthiness of data.

  • Availability impact: High

    Serious or total effect on availability.

CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at first.org/cvss.

EPSS
Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.
Score
0.00924 (0.9% probability)
Percentile
60.7%
Scores of
Nov 10, 2026
Model
v2026.06.15
CISA Known Exploited Vulnerabilities
This CVE is listed in the CISA KEV catalog.
Name in the catalog
ConnectWise ScreenConnect Improper Privilege Management and Missing Authorization Vulnerability
Added to the catalog
Sep 11, 2026
Federal due date
Sep 14, 2026
CISA assessment as of Sep 10, 2026
Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA.
Exploitation
Recorded by CISA as active
Automatable
no
Technical impact
total
Weakness (CWE)
CWE catalog version 5.0.
CWE names: Copyright © 2006-2026, The MITRE Corporation. See /security/cve/legal for the CWE license.
Affected products
Products listed in the CVE record, as the CNA published them.

  • ConnectWise ScreenConnect

    • affected: All versions prior to 26.6.5
References
Links listed in the CVE record. They lead to other sites, which CubePath does not control.
Timeline
  1. ID reserved
  2. Record published
  3. Added to CISA KEV
  4. Record last updated

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About CubePath
CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection.
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Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:06 UTC. Sources and licenses