---
title: "CVE-2026-84869: ScreenConnect Client: Guest-to-Host File… | CubePath"
description: "A condition in the ScreenConnect client may allow files to be transferred and executed through an active remote session without authorization or Host…"
language: en
source: https://cubepath.com/security/cve/CVE-2026-84869
---

# CVE-2026-84869: ScreenConnect Client: Guest-to-Host File… | CubePath

## 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](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-84869)

## 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

| Metric                 | Value   | What it means                                                                       |
| ---------------------- | ------- | ----------------------------------------------------------------------------------- |
| 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](https://www.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](https://cubepath.com/security/cve/legal) for the CWE license.

- [CWE-862](https://cwe.mitre.org/data/definitions/862.html) Missing Authorization
- [CWE-269](https://cwe.mitre.org/data/definitions/269.html) Improper Privilege Management

## 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.

- [connectwise.com/company/trust/security-bulletins/2026-09-08…](https://www.connectwise.com/company/trust/security-bulletins/2026-09-08-screenconnect-bulletin)
- [github.com/ConnectWise-Advisories/Disclosures/tree/main/CVE…](https://github.com/ConnectWise-Advisories/Disclosures/tree/main/CVE-2026-84869)
- [connectwise.com/company/trust/advisories](https://www.connectwise.com/company/trust/advisories)

## Timeline

1. ID reserved Sep 2, 2026
2. Record published Sep 8, 2026
3. Added to CISA KEV Sep 11, 2026
4. Record last updated Sep 12, 2026

## Look up another CVE

## 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.

[Cloud VPS](https://cubepath.com/vps) [DDoS protection](https://cubepath.com/ddos-protection)

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, 19:08 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)