---
cve: "CVE-2026-3564"
severity: "CRITICAL"
cvss: 9.0
epss: "36%"
vendor: "ConnectWise"
kev: false
exploited: false
published: "2026-03-17 15:16:19"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-08T13:56:57+02:00"
---

# CVE-2026-3564

> 9.0 CRITICAL

## Beschreibung

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.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Hoch | good |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Verändert | bad |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Referenzen

- <https://www.connectwise.com/company/trust/security-bulletins/2026-03-17-screenconnect-bulletin>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-3564) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_