CVE-2026-84869
Act now ● On CISA KEV — actively exploited
Actively exploited — on the CISA KEV list.
CVSS base
9.9
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS — probability of exploitation (30 days)
0.7%
51.3th percentile
CISA KEV
Listed
Added 2026-09-11 · patch by 2026-09-14
Weakness / dates
CWE-269
Published 2026-09-08 · modified 2026-09-12
CVSS breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
| Attack Vector | N | Network |
| Attack Complexity | L | Low |
| Privileges Required | L | Low |
| User Interaction | N | None |
| Scope | C | Changed |
| Confidentiality | H | High |
| Integrity | H | High |
| Availability | H | High |
Timeline
- 2026-09-08 — Published (NVD)
- 2026-09-11 — Added to CISA KEV (actively exploited)
- 2026-09-14 — CISA patch-by deadline
- 2026-09-12 — Last modified (NVD)
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.
Affected
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