Critical severity · published Sep 8, 2026
CVE-2026-84869
ScreenConnect Client: Guest-to-Host File Execution via File-Transfer Actions
In wildKEV
9.9
CVSS
0.9%
EPSS
Yes
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 60% of CVEs
Exploited in the wildYes
CISA KEVListed Sep 11, 2026
Federal remediation dueSep 14, 2026
Ransomware campaign useNot known
Affected products
Which versions
SC
ScreenConnect · ConnectWise
All versions prior to 26.6.5 · source: vendor, NVD, KEV
In the news
AdvisoryHigh
CISA Adds Three Known Exploited Vulnerabilities to Catalog
CISA has added three new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog , based on evidence of active exploitation. CVE-2026-42016 JFrog Artifactory Incorrect Authorization Vulnerability  CVE-2026-42018 JFrog Artifactory Improper Authentication Vulnerability  CVE-2026-84869 ConnectWise ScreenConnect Improper Privilege Management and Missing Authorization Vulnerability These types of vulnerabilities are a frequent attack vector for malicious cyber actors and pose significant risks to the federal enterprise. Binding Operational Directive (BOD) 26-04: Prioritizing Security Updates Based on Risk establishes vulnerability management requirements for Federal Civilian Executive Branch (FCEB) agencies. BOD 26-04 reinforces the importance of the KEV Catalog and requires federal agencies to prioritize rapid remediation of high-risk vulnerabilities, specifically those identified by Common Vulnerabilities and Exposures (CVEs) listed in CISA’s KEV Catalog on publicly exposed assets that grant total control of the asset post-exploitation, while deferring action for lower-risk vulnerabilities. BOD 26-04 further establishes basic expectations for when agencies must check whether threat actors compromised the system before the patch was applied. While BOD 26-04 applies only to FCEB agencies, CISA encourages all organizations to adopt risk-based vulnerability management and prioritize remediation of KEV Catalog vulnerabilities . CISA wi...
Sep 11, 2026·CISA Advisories
VulnerabilityHigh
[CISA KEV] CVE-2026-84869: ConnectWise ScreenConnect - ConnectWise ScreenConnect Improper Privilege Management and Missing Authorization Vulnerability
ConnectWise ScreenConnect contains both an improper privilege management and missing authorization vulnerability that may allow an attacker to transfer and execute files through an active remote session without authorization or host confirmation.
SCScreenConnectCVE-2026-84869
Sep 11, 2026·CISA KEV
Affected product
SC
ScreenConnect
ConnectWise
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