CVE-2026-84869
ConnectWise ScreenConnect Improper Privilege Management and Missing Authorization Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 14 September 2026). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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 3.1
- 9.9 CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 0.92% probability · 60th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 11 September 2026 · due 14 September 2026
- Weakness
- CWE-269, CWE-862
- Affected
- connectwise/screenconnect
- Source
- 7d616e1a-3288-43b1-a0dd-0a65d3e70a49
EPSS 0.9% since 29 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines. https://www.connectwise.com/company/trust/security-bulletins/2026-09-08-screenconnect-bulletin ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-84869
References
- https://github.com/ConnectWise-Advisories/Disclosures/tree/main/CVE-2026-84869Third Party Advisory
- https://www.connectwise.com/company/trust/advisoriesVendor Advisory
- https://www.connectwise.com/company/trust/security-bulletins/2026-09-08-screenconnect-bulletinVendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-84869US Government Resource
- https://www.huntress.com/blog/rogue-screenconnect-installationsThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.