CVE-2026-84869
CriticalExploitedPublic exploitA 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 Sep 8, 2026 · Updated Sep 12, 2026
Key Facts
Patch immediately- CVE-2026-84869 is a critical-severity vulnerability (CVSS 9.9 v3.1) affecting ScreenConnect (Connectwise).
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Sep 8, 2026. Public exploit code is available.
- EPSS estimates a 0.9% probability of exploitation in the next 30 days.
- Fixed versions are available, including ScreenConnect 26.6.5.9742.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
9.9
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
0.9%
Higher than 59.7% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2026-84869 brief as a PDF
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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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Sep 11, 2026 | Sep 14, 2026 | Not reported |
| Industry KEV feed | Sep 8, 2026 | Sep 14, 2026 | Not reported |
| CIRCL KEV | Sep 9, 2026 | Sep 14, 2026 | Not reported |
| ENISA EUVD | Sep 11, 2026 | n/a | Not reported |
Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| ScreenConnectConnectwise | >= All versions prior to 26.6.5 | 26.6.5.9742 |
Patched Releases
ScreenConnect
26.6.5.9742
Timeline
Publicly disclosed
Sep 8, 2026
Added to Industry KEV feed
Sep 8, 2026
Added to CIRCL KEV
Sep 9, 2026
Added to CISA KEV
Sep 11, 2026
Added to ENISA EUVD
Sep 11, 2026
Last updated
Sep 12, 2026
Weakness Type
- CWE-269 Improper Privilege Management
- CWE-862 Missing Authorization
References
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- otherhttps://github.com/ConnectWise-Advisories/Disclosures/tree/main/CVE-2026-84869
- otherhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-84869
FAQ
Common 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.
Affected: ScreenConnect (Connectwise) versions >= All versions prior to 26.6.5. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Sep 8, 2026.
Yes. It was added on Sep 11, 2026 with a federal remediation due date of Sep 14, 2026.
Public exploit code is available.
Fixed versions are available, including ScreenConnect 26.6.5.9742.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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