{"id":"CVE-2026-3564","published":"2026-03-17T14:48:59Z","modified":"2026-07-09T17:20:18Z","title":"ScreenConnect Instance Level Cryptographic Material Exposure","vendor":"ConnectWise","product":"ScreenConnect","tier":"core","eol":null,"affectedVersions":[{"vendor":"ConnectWise","product":"ScreenConnect","versions":["All server versions prior to 26.1"]}],"description":{"text":"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.","provenance":"source","from":"CVE.org"},"summary":null,"cvss":{"score":9,"severity":"CRITICAL","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.00368,"percentile":0.30712,"date":"2026-10-30","provenance":"source"},"kev":null,"vulncheckKev":{"dateAdded":"2026-03-17","exploitedFirstSeen":"2026-03-17","ransomware":false,"evidence":[{"url":"https://www.connectwise.com/company/trust/advisories","date":"2026-03-17"},{"url":"https://x.com/browsercookies/status/2033942473450586617","date":"2026-03-17"},{"url":"https://www.recordedfuture.com/blog/march-2026-cve-landscape","date":"2026-04-13"}],"evidenceTotal":3,"provenance":"source"},"exploited":true,"otx":{"pulseCount":15,"pulses":[{"name":"CVE-2026-84869 ScreenConnect Client AuthZ Bypass Actively Exploited (CISA KEV)","url":"https://otx.alienvault.com/pulse/6aab82ffaa277a71c24e3447","created":"2026-09-17"},{"name":"March 2026 CVE Landscape: 31 High-Impact Vulnerabilities Identified, Interlock Ransomware Group Exploits Cisco FMC Zero-Day","url":"https://otx.alienvault.com/pulse/69e24c0b72522013d514caa5","created":"2026-04-17"},{"name":"March 2026 CVE Landscape: 31 High-Impact Vulnerabilities Identified, Interlock Ransomware Group Exploits Cisco FMC Zero-Day","url":"https://otx.alienvault.com/pulse/69de0077cbff2dc8d99b17ff","created":"2026-04-14"},{"name":"Known_Cve | Mar 25, 2026 | Part 1/2","url":"https://otx.alienvault.com/pulse/69c2a5852b497ad2dfee0e56","created":"2026-03-24"},{"name":"Known_Cve | Mar 24, 2026 | Part 1/2","url":"https://otx.alienvault.com/pulse/69c14ad09114b91e2b796d1f","created":"2026-03-23"},{"name":"Known_Cve | Mar 23, 2026 | Part 1/2","url":"https://otx.alienvault.com/pulse/69bff7a467e13e64faf0c7a5","created":"2026-03-22"},{"name":"Known_Cve | Mar 22, 2026 | Part 1/2","url":"https://otx.alienvault.com/pulse/69bea7172a5f67c1be686cbd","created":"2026-03-21"},{"name":"Known_Cve | Mar 21, 2026 | Part 1/2","url":"https://otx.alienvault.com/pulse/69bd561efca225ea63938eb5","created":"2026-03-20"},{"name":"Known_Cve | Mar 20, 2026 | Part 1/2","url":"https://otx.alienvault.com/pulse/69bc05085c2ed0bd9d103e85","created":"2026-03-19"},{"name":"Known_Cve | Mar 19, 2026 | Part 1/2","url":"https://otx.alienvault.com/pulse/69bab30143f93182f0c3969e","created":"2026-03-18"}],"provenance":"machine"},"cwes":[{"id":"CWE-347","name":"Improper Verification of Cryptographic Signature"}],"references":[{"url":"https://www.connectwise.com/company/trust/security-bulletins/2026-03-17-screenconnect-bulletin","tags":[]}],"techniques":[],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2026-12574","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-12574","exploited":false,"exploitedSince":null,"provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":[],"flow":[],"timeline":[{"date":"2026-03-17","kind":"published","label":"Published (CVE.org)","url":"https://www.cve.org/CVERecord?id=CVE-2026-3564","provenance":"source"},{"date":"2026-03-17","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://www.connectwise.com/company/trust/advisories","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":null},"priority":{"score":55.2,"factors":[{"name":"In a KEV catalog","points":35.0,"detail":"listed in VulnCheck KEV"},{"name":"Recent KEV listing","points":5.0,"detail":"added 228 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":6.14,"detail":"percentile 0.3071"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":0.0,"detail":"none found"},{"name":"Mentioned in OTX pulses","points":2.73,"detail":"15 pulses"},{"name":"CVSS severity","points":6.3,"detail":"base score 9"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}