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CRITICAL severity

CVE-2026-84869 — Screenconnect

CRITICAL

CVE-2026-84869 is a critical-severity (CVSS 9.9) Improper Privilege Management vulnerability in connectwise screenconnect. A fix is available — see the affected versions and patch details below.

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.…

Published
Updated
Affected
1 product
Patched
See advisory
Exploits
None indexed
Exploitation data as of Oct 6, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Actively exploited in the wild

  • CISA’s SSVC triage classifies this CVE as under active exploitation.
  • A successful exploit gives an attacker total control of the affected component, not partial access.

Exploitation and automatability from CISA’s SSVC triage for CVE-2026-84869.

EPSS Exploitation Probability

via FIRST.org ↗
0.9%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs59th percentile — riskier than 59% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2026-84869 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 384,189 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

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.

Affected Products

1 product · 1 configurations
Application
screenconnectconnectwise
< 26.6.5.9742
range

Detection & mitigation playbook

Vendor / appliance

  1. Detect

    Inventory every connectwise screenconnect deployment and check each version against the affected-products list above.

  2. Fix

    Apply the connectwise screenconnect security patch or hotfix for CVE-2026-84869 on the affected version, following the vendor advisory for your exact build.

  3. Workarounds

    Close the privilege gap rather than the entry point: audit which accounts, roles and service identities can reach the affected operation, drop the component to the least privilege it actually needs, and review file and directory permissions created by earlier installs — a default left in place is what makes this reachable. Alongside that, restrict the management interface to trusted networks and apply the vendor's recommended configuration mitigations.

Frequently Asked Questions

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.
O3 Security · Runtime Protection

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CVE-2026-84869: Screenconnect (Critical 9.9, KEV)