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Exploited vulnerability · CISA KEV

Is CVE-2026-84869 exploited? Yes: in CISA KEV since 11 Sep 2026

Gociux · ConnectWise ScreenConnect · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2026-84869, ConnectWise ScreenConnect Improper Privilege Management and Missing Authorization Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 11 Sep 2026, 3 days after it was published. It affects ConnectWise ScreenConnect. If you run it, CISA's required action is: 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.

exploitedYesCISA KEV · 11 Sep 2026
ransomwareNot knownno confirmed use
EPSSbelow top 10%lower predicted activity right now (it is still confirmed exploited)
severity9.9CVSS 3.1 · critical
US federal due14 Sep 2026BOD 22-01 deadline

What it is

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.

VendorConnectWise (4 exploited CVEs in KEV)
ProductScreenConnect
VulnerabilityConnectWise ScreenConnect Improper Privilege Management and Missing Authorization Vulnerability
WeaknessCWE-269, CWE-862
Published8 Sep 2026
Added to KEV11 Sep 2026
Reported by (CNA)ConnectWise

What to do

  1. Check whether you run it. Look for ScreenConnect in your asset inventory, including appliances and cloud images. Stack check lists every exploited ConnectWise CVE at once.
  2. Apply the fix. 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.
  3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 8 Sep 2026.
  4. Get told next time. Email alerts when CISA adds a CVE for ConnectWise.

Other exploited CVEs in ScreenConnect

References

Questions

Is CVE-2026-84869 being exploited?

Yes. CISA added CVE-2026-84869 to the Known Exploited Vulnerabilities catalog on 11 Sep 2026, which means there is reliable evidence of exploitation in the wild.

Is CVE-2026-84869 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2026-84869?

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. Check ConnectWise's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected ScreenConnect and watch it for signs of compromise.

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in September 2026 · ConnectWise scorecard · act-now radar.

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