CVE-2026-84869

ScreenConnect Client: Guest-to-Host File Execution via File-Transfer Actions

At a glance

Severity: CRITICAL 9.9
Exploitation: Known exploited (CISA KEV) · added 2026-09-11
Exploited per ENISA since 2026-09-11
EPSS: EPSS 0.92 % · percentile 60 (2026-10-27)
State: PUBLISHED
Published: 2026-09-08
Updated: 2026-09-12
Assigner: ConnectWise
NVD status: Analyzed

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.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	CRITICAL 9.9	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H	ConnectWise
CVSS 3.1	CRITICAL 9.9	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H	NVD · 7d616e1a-3288-43b1-a0dd-0a65d3e70a49 (Secondary)

Weaknesses (CWE)

European references

ENISA EUVD · EUVD-2026-74053
GCVE · GCVE-0-2026-84869

Affected configurations (NVD CPE)

cpe:2.3:a:connectwise:screenconnect:*:*:*:*:*:*:*:* < 26.6.5.9742

Affected products

Product	Versions
ConnectWise · ScreenConnect	affected All versions prior to 26.6.5

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
CISA Known Exploited Vulnerabilities	CC0 1.0
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD