CVE Details
CVE-2026-84869
ConnectWise ScreenConnect Improper Privilege Management and Missing Authorization Vulnerability
Published: 2026-09-11
CVSS: 9.9 CRITICAL
Product: ConnectWise ScreenConnect
Due Date: 2026-09-14
ConnectWise ScreenConnect contains both an improper privilege management and missing authorization vulnerability that may allow an attacker to file transfer and execution through an active remote sessions without authorization or host confirmation.
GitHub PoC
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FIRST EPSS
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Timeline
CVE Stalker
KEV
MITRE
GitHub
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References
Show Raw Data
| Key | Remaining Key | Value |
|---|---|---|
| dataType | CVE_RECORD | |
| dataVersion | 5.2 | |
| cveMetadata > | cveId | CVE-2026-84869 |
| cveMetadata > | assignerOrgId | 7d616e1a-3288-43b1-a0dd-0a65d3e70a49 |
| cveMetadata > | state | PUBLISHED |
| cveMetadata > | assignerShortName | ConnectWise |
| cveMetadata > | dateReserved | 2026-09-02T13:57:51.898Z |
| cveMetadata > | datePublished | 2026-09-08T19:29:33.630Z |
| cveMetadata > | dateUpdated | 2026-09-11T19:58:23.379Z |
| containers > | cna > providerMetadata > orgId | 7d616e1a-3288-43b1-a0dd-0a65d3e70a49 |
| containers > | cna > providerMetadata > shortName | ConnectWise |
| containers > | cna > providerMetadata > dateUpdated | 2026-09-08T19:29:33.630Z |
| containers > | cna > title | ScreenConnect Client: Guest-to-Host File Execution via File-Transfer Actions |
| containers > | cna > problemTypes > 0 > descriptions > 0 > lang | en |
| containers > | cna > problemTypes > 0 > descriptions > 0 > cweId | CWE-862 |
| containers > | cna > problemTypes > 0 > descriptions > 0 > description | CWE-862 Missing Authorization |
| containers > | cna > problemTypes > 0 > descriptions > 0 > type | CWE |
| containers > | cna > problemTypes > 1 > descriptions > 0 > lang | en |
| containers > | cna > problemTypes > 1 > descriptions > 0 > cweId | CWE-269 |
| containers > | cna > problemTypes > 1 > descriptions > 0 > description | CWE-269 Improper Privilege Management |
| containers > | cna > problemTypes > 1 > descriptions > 0 > type | CWE |
| containers > | cna > impacts > 0 > capecId | CAPEC-1 |
| containers > | cna > impacts > 0 > descriptions > 0 > lang | en |
| containers > | cna > impacts > 0 > descriptions > 0 > value | CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs |
| containers > | cna > affected > 0 > vendor | ConnectWise |
| containers > | cna > affected > 0 > product | ScreenConnect |
| containers > | cna > affected > 0 > versions > 0 > status | affected |
| containers > | cna > affected > 0 > versions > 0 > version | All versions prior to 26.6.5 |
| containers > | cna > affected > 0 > defaultStatus | unaffected |
| containers > | cna > descriptions > 0 > lang | en |
| containers > | cna > descriptions > 0 > value | 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. |
| containers > | cna > descriptions > 0 > supportingMedia > 0 > type | text/html |
| containers > | cna > descriptions > 0 > supportingMedia > 0 > base64 | False |
| containers > | cna > descriptions > 0 > supportingMedia > 0 > value | 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. |
| containers > | cna > references > 0 > url | https://www.connectwise.com/company/trust/security-bulletins/2026-09-08-screenconnect-bulletin |
| containers > | cna > references > 1 > url | https://github.com/ConnectWise-Advisories/Disclosures/tree/main/CVE-2026-84869 |
| containers > | cna > references > 2 > url | https://www.connectwise.com/company/trust/advisories |
| containers > | cna > metrics > 0 > format | CVSS |
| containers > | cna > metrics > 0 > scenarios > 0 > lang | en |
| containers > | cna > metrics > 0 > scenarios > 0 > value | GENERAL |
| containers > | cna > metrics > 0 > cvssV3_1 > version | 3.1 |
| containers > | cna > metrics > 0 > cvssV3_1 > attackVector | NETWORK |
| containers > | cna > metrics > 0 > cvssV3_1 > attackComplexity | LOW |
| containers > | cna > metrics > 0 > cvssV3_1 > privilegesRequired | LOW |
| containers > | cna > metrics > 0 > cvssV3_1 > userInteraction | NONE |
| containers > | cna > metrics > 0 > cvssV3_1 > scope | CHANGED |
| containers > | cna > metrics > 0 > cvssV3_1 > confidentialityImpact | HIGH |
| containers > | cna > metrics > 0 > cvssV3_1 > integrityImpact | HIGH |
| containers > | cna > metrics > 0 > cvssV3_1 > availabilityImpact | HIGH |
| containers > | cna > metrics > 0 > cvssV3_1 > baseSeverity | CRITICAL |
| containers > | cna > metrics > 0 > cvssV3_1 > baseScore | 9.9 |
| containers > | cna > metrics > 0 > cvssV3_1 > vectorString | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
| containers > | cna > workarounds > 0 > lang | en |
| containers > | cna > workarounds > 0 > value | If you are unable to apply the update immediately due to maintenance windows or change-freeze policies, you can implement the following as a temporary mitigation to help reduce exposure until the update can be applied. This is not a substitute for installing the security update. * Navigate to the Administration > Security > Roles section. * Edit a role, review each session group that has permissions assigned to it, and deselect the TransferFiles permission if it is selected. * Save your changes. Repeat for each role. |
| containers > | cna > workarounds > 0 > supportingMedia > 0 > type | text/html |
| containers > | cna > workarounds > 0 > supportingMedia > 0 > base64 | False |
| containers > | cna > workarounds > 0 > supportingMedia > 0 > value | <p>If you are unable to apply the update immediately due to maintenance windows or change-freeze policies, you can implement the following as a temporary mitigation to help reduce exposure until the update can be applied. <b>This is not a substitute for installing the security update</b>.</p> <p></p><ol><li>Navigate to the <b>Administration > Security > Roles</b> section. </li><li>Edit a role, review each session group that has permissions assigned to it, and deselect the <b>TransferFiles</b> permission if it is selected.</li><li>Save your changes. Repeat for each role.</li></ol><p></p> |
| containers > | cna > solutions > 0 > lang | en |
| containers > | cna > solutions > 0 > value | Cloud: Updated to the latest release. We recommend that partners reinstall their host clients https://docs.connectwise.com/ScreenConnect_Documentation/Get_started/Host_client/Reinstall_the_host_client and update their access agents https://docs.connectwise.com/ScreenConnect_Documentation/Get_started/Host_page/Reinstall_and_upgrade_an_access_agent . On-prem: Upgrade to ScreenConnect client version 26.6.5 or later. Automate-integrated ScreenConnect deployments: Automate partners are eligible to update their integrated on-premises ScreenConnect installation as long as their Automate Assurance subscription is active. Automate partners should apply the ScreenConnect 26.6.5 update through Automate Product Updates. |
| containers > | cna > solutions > 0 > supportingMedia > 0 > type | text/html |
| containers > | cna > solutions > 0 > supportingMedia > 0 > base64 | False |
| containers > | cna > solutions > 0 > supportingMedia > 0 > value | <p><b>Cloud: </b><span>Updated to the latest release. We recommend that partners </span><a href="https://docs.connectwise.com/ScreenConnect_Documentation/Get_started/Host_client/Reinstall_the_host_client">reinstall their host clients</a><span> and </span><a href="https://docs.connectwise.com/ScreenConnect_Documentation/Get_started/Host_page/Reinstall_and_upgrade_an_access_agent">update their access agents</a><span>.</span></p><p><b>On-prem</b>: <span>Upgrade to ScreenConnect client version </span><span>26.6.5 </span><span>or later.</span></p><p><b>Automate-integrated ScreenConnect deployments: </b><span>Automate partners are eligible to update their integrated on-premises ScreenConnect installation as long as their Automate Assurance subscription is active. Automate partners should apply the ScreenConnect </span><span>26.6.5 </span><span>update through Automate Product Updates.</span></p> |
| containers > | cna > source > discovery | UNKNOWN |
| containers > | cna > x_generator > engine | Vulnogram 1.0.5 |
| containers > | adp > 0 > metrics > 0 > other > type | ssvc |
| containers > | adp > 0 > metrics > 0 > other > content > id | CVE-2026-84869 |
| containers > | adp > 0 > metrics > 0 > other > content > role | CISA Coordinator |
| containers > | adp > 0 > metrics > 0 > other > content > options > 0 > Exploitation | active |
| containers > | adp > 0 > metrics > 0 > other > content > options > 1 > Automatable | no |
| containers > | adp > 0 > metrics > 0 > other > content > options > 2 > Technical Impact | total |
| containers > | adp > 0 > metrics > 0 > other > content > version | 2.0.3 |
| containers > | adp > 0 > metrics > 0 > other > content > timestamp | 2026-09-11T18:50:39.725092Z |
| containers > | adp > 0 > metrics > 1 > other > type | kev |
| containers > | adp > 0 > metrics > 1 > other > content > dateAdded | 2026-09-11 |
| containers > | adp > 0 > metrics > 1 > other > content > reference | https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-84869 |
| containers > | adp > 0 > references > 0 > url | https://www.huntress.com/blog/rogue-screenconnect-installations |
| containers > | adp > 0 > references > 0 > tags > 0 | third-party-advisory |
| containers > | adp > 0 > references > 1 > url | https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-84869 |
| containers > | adp > 0 > references > 1 > tags > 0 | government-resource |
| containers > | adp > 0 > title | CISA ADP Vulnrichment |
| containers > | adp > 0 > providerMetadata > orgId | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| containers > | adp > 0 > providerMetadata > shortName | CISA-ADP |
| containers > | adp > 0 > providerMetadata > dateUpdated | 2026-09-11T19:58:23.379Z |
| containers > | adp > 0 > timeline > 0 > time | 2026-09-11T00:00:00.000Z |
| containers > | adp > 0 > timeline > 0 > lang | en |
| containers > | adp > 0 > timeline > 0 > value | CVE-2026-84869 added to CISA KEV |