CVE-2026-3564
Critical
Description
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.
SeverityCritical
CVSS9.0
Exploit probability—
ProductScreenConnect
PublishedMar 17, 2026
First seenMar 17, 2026
Weakness typeCWE-347CWE-347
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ConnectWise ScreenConnect | All server versions prior to 26.1 | — |
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