High-severity RCE in a widely used remote support client (ConnectWise ScreenConnect/Control) used by MSPs and enterprises; can enable mass endpoint compromise and lateral movement.
CVE-2026-84869
Unauthorized file transfer/execution via ScreenConnect client remote session
Is CVE-2026-84869 being exploited?
Yes. CVE-2026-84869 appears in CISA's Known Exploited Vulnerabilities catalog, which means exploitation in the wild has been confirmed and reported. Treat it as active rather than theoretical, and patch it ahead of higher-scoring vulnerabilities that carry no exploitation evidence.
How severe is CVE-2026-84869?
CVE-2026-84869 is rated Critical with a CVSS score of 9.9. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-84869?
Yes. A fix has been recorded for CVE-2026-84869. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-84869 affect?
CVE-2026-84869 affects ConnectWise ScreenConnect / ConnectWise Control client (host/agent), Windows clients, macOS clients, Linux clients. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-84869?
Isolate ScreenConnect clients, restrict/disable unattended access, apply vendor update when available
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Allows unauthorized file transfer and execution during active remote sessions, enabling remote code execution on client endpoints, data theft, and lateral movement.
Immediate action required
- affectedAll versions prior to 26.6.5
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.