ScreenConnect Instance Level Cryptographic Material Exposure

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Summary

CVECVE-2026-3564
StatePUBLISHED
AssignerConnectWise
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-03-17 15:16:19 UTC
Updated2026-07-09 18:16:51 UTC
DescriptionA condition in the ScreenConnect server component may allow an actor with access to server-level cryptographic material used for authentication to obtain unauthorized access, including elevated privileges, in certain scenarios. ScreenConnect host and guest client agents are not independently affected by this CVE.

Risk And Classification

Primary CVSS: v3.1 9 CRITICAL from 7d616e1a-3288-43b1-a0dd-0a65d3e70a49

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

EPSS: 0.003620000 probability, percentile 0.283410000 (date 2026-07-13)

Problem Types: CWE-347 | CWE-347 CWE-347 Improper Verification of Cryptographic Signature

VersionSourceTypeScoreSeverityVector
3.17d616e1a-3288-43b1-a0dd-0a65d3e70a49Secondary9CRITICALCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
3.1CNACVSS9CRITICALCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA ConnectWise ScreenConnect affected All server versions prior to 26.1 Not specified

References

ReferenceSourceLinkTags
www.connectwise.com/company/trust/security-bulletins/2026-03-17-screenconnect-bul... 7d616e1a-3288-43b1-a0dd-0a65d3e70a49 www.connectwise.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

Solutions

CNA: Cloud: No action is required. ScreenConnect servers hosted in “screenconnect.com” cloud (standalone and Automate/RMM integrated) or “hostedrmm.com” for Automate partners have been updated to remediate the issue.   On-premise ScreenConnect Partners: Please upgrade to ScreenConnect Server version 26.1. Visit Download | ScreenConnect page to download and apply the update (access requires a valid on-premises license).  * If your license is out of maintenance, you must upgrade your license https://docs.connectwise.com/ScreenConnect_Documentation/On-premises/On-premises_licensing/Renew_or_upgrade_an_on-premises_license  before installing the latest supported release of ScreenConnect. * For instructions on updating to the newest release, please reference this doc: Upgrade an on-premise installation - ConnectWise  Automate On-Prem Partners with ScreenConnect Integration: For partners using an on-premises ScreenConnect installation integrated with Automate, ScreenConnect 26.1 is available through the Automate Product Updates https://docs.connectwise.com/ConnectWise_Automate_Documentation/Automate_Product_Updates page. Link to release notes: ScreenConnect 26.1 / ScreenConnect https://screenconnect.product.connectwise.com/communities/26/topics/5088-screenconnect-261

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