Vulnerability report

Exploited in the wild High confidence Not in CISA KEV

CVE-2026-84869

ScreenConnect Client Guest to Host File Execution

ConnectWise / ScreenConnect · All versions prior to 26.6.5

View live feed Monitor via API Watch CVE-2026-84869
Severity
CVSS 9.9 · Critical
Confidence
High
Exploit status
Exploited in the wild
EPSS
0.4%
First observed
—
Last observed
—

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2026-84869 is a vulnerability affecting ConnectWise ScreenConnect. A condition in the ScreenConnect client may allow files to be transferred and executed through an active remote session without authorization or...

Is it exploited?

Yes. Previdian tracks this CVE as a known exploited vulnerability. Confidence is high. Also confirmed by third-party sources.

Who is affected?

ConnectWise / ScreenConnect all versions prior to 26.6.5.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

ScreenConnect Client Guest to Host File Execution

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.

Vendor Product Affected Status
ConnectWise ScreenConnect All versions prior to 26.6.5 Affected
Published
08 Sep 2026
Exploitation Reported
09 Sep 2026
Attack vector
Remote
Complexity
Low
Privileges
Low
User interaction
None

CVE References

Exploitation evidence

Why Previdian marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

Huntress Blog

Recorded 09 Sep 2026

Independent exploitation attestation added to the Previdian record.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the Previdian Pro API.

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Source Added
Huntress Blog First 2026-09-09 07:51 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
User-Agents
Callback hosts
0
0
0

Request targets and User-Agents available in Pro. Callback host details available in Enterprise.

Scanner coverage

No scanner integrations recorded yet.

Virtual patch status

No Previdian virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

No detection artifacts or sensor request patterns are available for this CVE yet.

Check back as sensor telemetry and scanner integrations are updated.

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

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

EPSS

0.4%

Weaknesses

Improper Privilege Management CWE-269 Missing Authorization CWE-862

Timeline

From disclosure to observed exploitation

  1. Added to Previdian KEV Feed

    High-confidence, third-party attested exploitation

  2. CVE published

    Vulnerability disclosed publicly

  3. CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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  • Evidence confidence and provenance
  • First-party sensor telemetry
  • PoC and scanner references
  • Affected versions and enrichment
  • Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2026-84869

Free JSON includes basic KEV fields 
{
  "cve_id": "CVE-2026-84869",
  "confidence": "High",
  "cvss_score": 9.9,
  "cvss_estimated": false,
  "epss_score": 0.00382,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}