CVE-2026-3564

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-3564", "assignerOrgId": "7d616e1a-3288-43b1-a0dd-0a65d3e70a49", "state": "PUBLISHED", "assignerShortName": "ConnectWise", "dateReserved": "2026-03-04T20:04:12.757Z", "datePublished": "2026-03-17T14:48:59.940Z", "dateUpdated": "2026-07-09T17:20:18.051Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "7d616e1a-3288-43b1-a0dd-0a65d3e70a49", "shortName": "ConnectWise", "dateUpdated": "2026-07-09T17:20:18.051Z"}, "title": "ScreenConnect Instance Level Cryptographic Material Exposure", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-347", "description": "CWE-347 Improper Verification of Cryptographic Signature", "type": "CWE"}]}], "affected": [{"vendor": "ConnectWise", "product": "ScreenConnect", "modules": ["Server component", "Server authentication cryptographic material handling"], "versions": [{"status": "affected", "version": "All server versions prior to 26.1"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "A 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.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<div><div><div><p>A 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.</p>\n\n</div>\n\n</div>\n\n</div>"}]}], "references": [{"url": "https://www.connectwise.com/company/trust/security-bulletins/2026-03-17-screenconnect-bulletin"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseSeverity": "CRITICAL", "baseScore": 9, "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H"}}], "solutions": [{"lang": "en", "value": "Cloud:\u00a0No action is required. ScreenConnect servers hosted in\n\u201cscreenconnect.com\u201d cloud (standalone and Automate/RMM integrated) or\n\u201chostedrmm.com\u201d for Automate partners have been updated to remediate the\nissue.\u202f\u00a0\n\n\n\n\n\nOn-premise\u00a0ScreenConnect Partners:\n\n\n\n\n\n\n\nPlease upgrade to ScreenConnect Server version 26.1. Visit Download\n| ScreenConnect page to download and apply the update (access\nrequires a valid on-premises license).\u00a0\n\n\n\n\n\n\n\n\n\n * 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 \u00a0before installing\nthe latest supported release of ScreenConnect. \n * For\ninstructions on updating to the newest release, please reference this\ndoc: Upgrade an on-premise\ninstallation - ConnectWise\u00a0\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\nAutomate On-Prem Partners with ScreenConnect\nIntegration:\n\n\n\n\n\nFor partners using an on-premises ScreenConnect\ninstallation integrated with Automate, ScreenConnect 26.1 is available through\nthe Automate Product Updates https://docs.connectwise.com/ConnectWise_Automate_Documentation/Automate_Product_Updates page.\n\n\n\n\n\n\n\n\n\n\nLink to release\nnotes: ScreenConnect 26.1 / ScreenConnect https://screenconnect.product.connectwise.com/communities/26/topics/5088-screenconnect-261", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p><br></p>\n\n<p><b>Cloud:&nbsp;</b>No action is required. ScreenConnect servers hosted in\n\u201cscreenconnect.com\u201d cloud (standalone and Automate/RMM integrated) or\n\u201chostedrmm.com\u201d for Automate partners have been updated to remediate the\nissue.\u202f&nbsp;</p>\n\n<p><b>On-premise</b>&nbsp;<b>ScreenConnect</b> <b>Partners:</b></p>\n\n\n\n<p>Please upgrade to ScreenConnect Server version 26.1. Visit <a target=\"_blank\" rel=\"nofollow\" href=\"https://www.screenconnect.com/download\">Download\n| ScreenConnect</a> page to download and apply the update <i>(access\nrequires a valid on-premises license)</i>.&nbsp;</p>\n\n\n\n<p></p><ul><li>If your license is out of maintenance, you must <a target=\"_blank\" rel=\"nofollow\" href=\"https://docs.connectwise.com/ScreenConnect_Documentation/On-premises/On-premises_licensing/Renew_or_upgrade_an_on-premises_license\">upgrade your license</a>&nbsp;before installing\nthe latest supported release of ScreenConnect. </li><li>For\ninstructions on updating to the newest release, please reference this\ndoc: <a target=\"_blank\" rel=\"nofollow\" href=\"https://docs.connectwise.com/ConnectWise_ScreenConnect_Documentation/On-premises/Get_started_with_ConnectWise_ScreenConnect_On-Premise/Upgrade_an_on-premises_installation\">Upgrade an on-premise\ninstallation - ConnectWise</a>&nbsp;</li></ul><p></p>\n\n\n\n\n\n\n\n<p><b>Automate On-Prem Partners with ScreenConnect\nIntegration</b>:</p>\n\n<p>For partners using an on-premises ScreenConnect\ninstallation integrated with Automate, ScreenConnect 26.1 is available through\nthe <a href=\"https://docs.connectwise.com/ConnectWise_Automate_Documentation/Automate_Product_Updates\">Automate Product Updates</a> page.</p><p><br></p>\n\n<p>Link to release\nnotes: <a href=\"https://screenconnect.product.connectwise.com/communities/26/topics/5088-screenconnect-261\">ScreenConnect 26.1 / ScreenConnect</a></p>"}]}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 0.5.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-03-17T00:00:00+00:00", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3", "id": "CVE-2026-3564"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-18T03:55:41.186Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-3564", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-03-17T15:24:40.438030Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-17T15:24:45.359Z"}}], "cna": {"title": "ScreenConnect Instance Level Cryptographic Material Exposure", "source": {"discovery": "UNKNOWN"}, "metrics": [{"format": "CVSS", "cvssV3_1": {"scope": "CHANGED", "version": "3.1", "baseScore": 9, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "ConnectWise", "modules": ["Server component", "Server authentication cryptographic material handling"], "product": "ScreenConnect", "versions": [{"status": "affected", "version": "All server versions prior to 26.1"}], "defaultStatus": "unaffected"}], "solutions": [{"lang": "en", "value": "Cloud:\u00a0No action is required. ScreenConnect servers hosted in\n\u201cscreenconnect.com\u201d cloud (standalone and Automate/RMM integrated) or\n\u201chostedrmm.com\u201d for Automate partners have been updated to remediate the\nissue.\u202f\u00a0\n\n\n\n\n\nOn-premise\u00a0ScreenConnect Partners:\n\n\n\n\n\n\n\nPlease upgrade to ScreenConnect Server version 26.1. Visit Download\n| ScreenConnect page to download and apply the update (access\nrequires a valid on-premises license).\u00a0\n\n\n\n\n\n\n\n\n\n * 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 \u00a0before installing\nthe latest supported release of ScreenConnect. \n * For\ninstructions on updating to the newest release, please reference this\ndoc: Upgrade an on-premise\ninstallation - ConnectWise\u00a0\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\nAutomate On-Prem Partners with ScreenConnect\nIntegration:\n\n\n\n\n\nFor partners using an on-premises ScreenConnect\ninstallation integrated with Automate, ScreenConnect 26.1 is available through\nthe Automate Product Updates https://docs.connectwise.com/ConnectWise_Automate_Documentation/Automate_Product_Updates page.\n\n\n\n\n\n\n\n\n\n\nLink to release\nnotes: ScreenConnect 26.1 / ScreenConnect https://screenconnect.product.connectwise.com/communities/26/topics/5088-screenconnect-261", "supportingMedia": [{"type": "text/html", "value": "<p><br></p>\n\n<p><b>Cloud:&nbsp;</b>No action is required. ScreenConnect servers hosted in\n\u201cscreenconnect.com\u201d cloud (standalone and Automate/RMM integrated) or\n\u201chostedrmm.com\u201d for Automate partners have been updated to remediate the\nissue.\u202f&nbsp;</p>\n\n<p><b>On-premise</b>&nbsp;<b>ScreenConnect</b> <b>Partners:</b></p>\n\n\n\n<p>Please upgrade to ScreenConnect Server version 26.1. Visit <a target=\"_blank\" rel=\"nofollow\" href=\"https://www.screenconnect.com/download\">Download\n| ScreenConnect</a> page to download and apply the update <i>(access\nrequires a valid on-premises license)</i>.&nbsp;</p>\n\n\n\n<p></p><ul><li>If your license is out of maintenance, you must <a target=\"_blank\" rel=\"nofollow\" href=\"https://docs.connectwise.com/ScreenConnect_Documentation/On-premises/On-premises_licensing/Renew_or_upgrade_an_on-premises_license\">upgrade your license</a>&nbsp;before installing\nthe latest supported release of ScreenConnect. </li><li>For\ninstructions on updating to the newest release, please reference this\ndoc: <a target=\"_blank\" rel=\"nofollow\" href=\"https://docs.connectwise.com/ConnectWise_ScreenConnect_Documentation/On-premises/Get_started_with_ConnectWise_ScreenConnect_On-Premise/Upgrade_an_on-premises_installation\">Upgrade an on-premise\ninstallation - ConnectWise</a>&nbsp;</li></ul><p></p>\n\n\n\n\n\n\n\n<p><b>Automate On-Prem Partners with ScreenConnect\nIntegration</b>:</p>\n\n<p>For partners using an on-premises ScreenConnect\ninstallation integrated with Automate, ScreenConnect 26.1 is available through\nthe <a href=\"https://docs.connectwise.com/ConnectWise_Automate_Documentation/Automate_Product_Updates\">Automate Product Updates</a> page.</p><p><br></p>\n\n<p>Link to release\nnotes: <a href=\"https://screenconnect.product.connectwise.com/communities/26/topics/5088-screenconnect-261\">ScreenConnect 26.1 / ScreenConnect</a></p>", "base64": false}]}], "references": [{"url": "https://www.connectwise.com/company/trust/security-bulletins/2026-03-17-screenconnect-bulletin"}], "x_generator": {"engine": "Vulnogram 0.5.0"}, "descriptions": [{"lang": "en", "value": "A 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.", "supportingMedia": [{"type": "text/html", "value": "<div><div><div><p>A 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.</p>\n\n</div>\n\n</div>\n\n</div>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-347", "description": "CWE-347 Improper Verification of Cryptographic Signature"}]}], "providerMetadata": {"orgId": "7d616e1a-3288-43b1-a0dd-0a65d3e70a49", "shortName": "ConnectWise", "dateUpdated": "2026-07-09T17:20:18.051Z"}}}, "cveMetadata": {"cveId": "CVE-2026-3564", "state": "PUBLISHED", "dateUpdated": "2026-07-09T17:20:18.051Z", "dateReserved": "2026-03-04T20:04:12.757Z", "assignerOrgId": "7d616e1a-3288-43b1-a0dd-0a65d3e70a49", "datePublished": "2026-03-17T14:48:59.940Z", "assignerShortName": "ConnectWise"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "modules": ["Server component", "Server authentication cryptographic material handling"], "product": "ScreenConnect", "vendor": "ConnectWise", "versions": [{"status": "affected", "version": "All server versions prior to 26.1"}]}], "source": "7d616e1a-3288-43b1-a0dd-0a65d3e70a49"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A 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."}, {"lang": "es", "value": "Una condici\u00f3n en ScreenConnect podr\u00eda permitir a un actor con acceso a material criptogr\u00e1fico a nivel de servidor utilizado para la autenticaci\u00f3n obtener acceso no autorizado, incluyendo privilegios elevados, en ciertos escenarios."}], "id": "CVE-2026-3564", "lastModified": "2026-07-09T18:16:51.930", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.0, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 6.0, "source": "7d616e1a-3288-43b1-a0dd-0a65d3e70a49", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-3564", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-03-17T00:00:00+00:00", "version": "2.0.3"}}]}, "published": "2026-03-17T15:16:19.253", "references": [{"source": "7d616e1a-3288-43b1-a0dd-0a65d3e70a49", "url": "https://www.connectwise.com/company/trust/security-bulletins/2026-03-17-screenconnect-bulletin"}], "sourceIdentifier": "7d616e1a-3288-43b1-a0dd-0a65d3e70a49", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-347"}], "source": "7d616e1a-3288-43b1-a0dd-0a65d3e70a49", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,26.1)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "ScreenConnect", "source": "cna", "vendor": "ConnectWise"}, "product": "screenconnect", "vendor": "connectwise"}], "created": "2026-03-18T12:13:21.411136+00:00", "updated": "2026-08-02T02:45:03.143003+00:00", "vendors": ["connectwise", "connectwise$PRODUCT$screenconnect"]}