Vulnerability · Published Mar 17, 2026 · Assigned by ConnectWise
CVE-2026-3564ScreenConnect Instance Level Cryptographic Material Exposure
Critical 9.0
In plain English
A critical-severity security flaw in ScreenConnect from ConnectWise. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities).
Severity (CVSS 3.1)9.0Critical
Exploit odds (30 days)0.4%top 68.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| ConnectWise | ScreenConnect | All server versions prior to 26.1 |
Weakness: CWE-347 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H