CVE-2026-84869
ConnectWise ScreenConnect Improper Privilege Management and Missing Authorization Vulnerability
CVSS
9.9
Crítica
EPSS
0.9%
p61
KEV
SIM
11 de set. de 2026
Exploit Today
68
0-100
Publicado: 8 de set. de 2026 · Última mod.: 12 de set. de 2026 · CWE-269 · CWE-862
Produto
ConnectWise / ScreenConnect
Vulnerabilidade
ConnectWise ScreenConnect Improper Privilege Management and Missing Authorization Vulnerability
Adicionado ao KEV
11 de set. de 2026
Corrigir até
14 de set. de 2026
Uso conhecido em ransomware
Não
Descrição resumida
ConnectWise ScreenConnect contains both an improper privilege management and missing authorization vulnerability that may allow an attacker to transfer and execute files through an active remote session without authorization or host confirmation.
Ação necessária
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.
Notas
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
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.
- github.comhttps://github.com/ConnectWise-Advisories/Disclosures/tree/main/CVE-2026-84869
- www.connectwise.comhttps://www.connectwise.com/company/trust/advisories
- www.connectwise.comhttps://www.connectwise.com/company/trust/security-bulletins/2026-09-08-screenconnect-bulletin
- www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-84869
- www.huntress.comhttps://www.huntress.com/blog/rogue-screenconnect-installations