CVE-2026-84869 KEV
9.9
CRITICAL · CVSS 3.1 · EPSS 0.9% (pctl 59)
Patch first
On CISA KEV — known exploited in the wild, due 2026-09-14.
Description
A condition in the ScreenConnect client may allow files to be transferred and executed through an active remote session without authorization or Host confirmation in certain circumstances. ScreenConnect servers are not impacted.
Scoring
| CVSS | 9.9 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
| EPSS | 0.92% — more likely to be exploited than 59% of all CVEs |
| Weakness | CWE-269 |
| On CISA KEV | yes — remediate by 2026-09-14 |
| Public exploit | none known |
| Published | 2026-09-08 |
| Last modified | 2026-09-12 |
CISA KEV
| Name | ConnectWise ScreenConnect Improper Privilege Management and Missing Authorization Vulnerability |
|---|---|
| Added | 2026-09-11 |
| Due | 2026-09-14 |
| Vendor / product | ConnectWise / ScreenConnect |
| Ransomware use | none reported |
Affected (1)
| Vendor | Product |
|---|---|
| connectwise | screenconnect |
References
- https://github.com/ConnectWise-Advisories/Disclosures/tree/main/CVE-2026-84869
- https://www.connectwise.com/company/trust/advisories
- https://www.connectwise.com/company/trust/security-bulletins/2026-09-08-screenconnect-bulletin
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-84869
- https://www.huntress.com/blog/rogue-screenconnect-installations
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