Vulnerability details
CVE-2026-84869
Actively exploited
ConnectWise ScreenConnect
ScreenConnect Client: Guest-to-Host File Execution via File-Transfer Actions
CVSS 3.1
9.9Critical
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.9Critical | 3.1 | CVEProject cvelistV5 (CNA) (ConnectWise) | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| ConnectWise | ScreenConnect | All versions prior to 26.6.5 | CVEProject cvelistV5 (CNA) |
References and advisories
5- https://www.connectwise.com/company/trust/security-bulletins/2026-09-08-screenconnect-bulletin
- https://github.com/ConnectWise-Advisories/Disclosures/tree/main/CVE-2026-84869
- https://www.connectwise.com/company/trust/advisories
- https://www.huntress.com/blog/rogue-screenconnect-installations third-party-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-84869 government-resource
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Details
- Published
- 2026-09-08
- Last updated
- 2026-09-12
- State
- Published
- Assigner (CNA)
- ConnectWise
- Kolun priority
- 70 · High
CISA KEV catalog
- Date added
- 2026-09-11
- Due date
- 2026-09-14
- Used in ransomware
- Unknown
Exploit prediction (EPSS)
0.92%
Probability of exploitation in 30 days
60.7%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Active
- Technical impact
- Total
Weaknesses (CWE)
- CWE-862Missing Authorization
- CWE-269Improper Privilege Management