CVE-2026-3564 ScreenConnect Instance Level Cryptographic Material Exposure
Exposure of server-level cryptographic material allows attackers to gain unauthorized access and elevated privileges in ScreenConnect.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-3564?
CVE-2026-3564 is a critical vulnerability in ConnectWise ScreenConnect, published on 17 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Weakness: CWE-347
Which versions are affected by CVE-2026-3564?
How do I fix CVE-2026-3564?
No fix has been published for CVE-2026-3564 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-3564 being exploited?
There is no known exploitation of CVE-2026-3564 in the wild and no public exploit code.
Sources
Also known as GHSA-hrc2-hchg-rq8r.