# CVE-2026-84869 — ConnectWise ScreenConnect

**CISA KEV**

> As of 2026-09-12, CVE-2026-84869 is a CRITICAL-severity vulnerability in ConnectWise ScreenConnect, CVSS v3.1 9.9, EPSS 0.6% (51.1th percentile). It is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-09-11), with a US federal remediation deadline of 2026-09-14. Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-84869, most recently “CISA Warns of Active Exploitation of Critical ConnectWise ScreenConnect Flaw (CVE-2026-84869, CVSS 9.9)”.

**Last updated:** 2026-09-12

## What is 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.

The record classifies CVE-2026-84869 under weakness classes [CWE-862](https://cwe.mitre.org/data/definitions/862.html), [CWE-269](https://cwe.mitre.org/data/definitions/269.html). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs low-privilege credentials, needs no user interaction, and has high impact on confidentiality, integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 10 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 9.9 — CRITICAL (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H`)
- **EPSS (FIRST):** 0.6% probability of exploitation in the next 30 days, higher than 51.1% of all scored CVEs
- **CISA KEV:** Listed since 2026-09-11, federal remediation deadline 2026-09-14
- **Threadlinqs priority:** 9/10 — CISA KEV-listed, which Threadlinqs floors at 9
- **Published:** 2026-09-08, last modified 2026-09-12

## Is CVE-2026-84869 being exploited?

CISA added CVE-2026-84869 to the Known Exploited Vulnerabilities catalog on 2026-09-11, which means the agency holds evidence of exploitation in the wild; US federal civilian agencies had to remediate it by 2026-09-14 under BOD 22-01. It currently carries a trending score of 50 in the Threadlinqs vulnerability feed.

## Affected products and versions

- **ConnectWise**: ScreenConnect

## How to fix CVE-2026-84869

Vendor advisory: [https://www.connectwise.com/company/trust/advisories](https://www.connectwise.com/company/trust/advisories). Because CVE-2026-84869 is KEV-listed, US federal civilian agencies were required to apply the vendor fix, or stop using the product, by 2026-09-14. Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.

## Threat activity tracking CVE-2026-84869

1 tracked threat in the Threadlinqs corpus references CVE-2026-84869, either in the campaign’s CVE list or as an indicator on the campaign record.

- [CISA Warns of Active Exploitation of Critical ConnectWise ScreenConnect Flaw (CVE-2026-84869, CVSS 9.9)](https://intel.threadlinqs.com/threat/TL-2026-2533) — CRITICAL · 2026-09-16

## Sources

Enriched from CVE.org, NVD, FIRST EPSS, CISA KEV, GitHub Security Advisories. Last verified by Threadlinqs on 2026-09-18. This product uses the NVD API but is not endorsed or certified by the NVD.

**Other references**

- [connectwise.com](https://www.connectwise.com/company/trust/security-bulletins/2026-09-08-screenconnect-bulletin)
- [github.com](https://github.com/ConnectWise-Advisories/Disclosures/tree/main/CVE-2026-84869)
- [connectwise.com (advisories)](https://www.connectwise.com/company/trust/advisories)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-84869
Full detection coverage and IOCs for threats exploiting CVE-2026-84869 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp