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Exploited vulnerability · CISA KEV

Is CVE-2024-1709 exploited? Yes: in CISA KEV since 22 Feb 2024

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

Yes. CVE-2024-1709, ConnectWise ScreenConnect Authentication Bypass Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 22 Feb 2024, 1 days after it was published. It is known to be used in ransomware campaigns. It affects ConnectWise ScreenConnect. If you run it, CISA's required action is: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

exploitedYesCISA KEV · 22 Feb 2024
ransomwareKnownused in campaigns
EPSStop 1%among the most likely CVEs to be exploited
severity10CVSS 3.1 · critical
US federal due29 Feb 2024BOD 22-01 deadline

What it is

ConnectWise ScreenConnect contains an authentication bypass vulnerability that allows an attacker with network access to the management interface to create a new, administrator-level account on affected devices.

VendorConnectWise (4 exploited CVEs in KEV)
ProductScreenConnect
VulnerabilityConnectWise ScreenConnect Authentication Bypass Vulnerability
WeaknessCWE-288
Published21 Feb 2024
Added to KEV22 Feb 2024
Reported by (CNA)cisa-cg

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 per vendor instructions or discontinue use of the product if mitigations are unavailable.
  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 21 Feb 2024.
  4. Get told next time. Email alerts when CISA adds a CVE for ConnectWise.

Other exploited CVEs in ScreenConnect

References

Questions

Is CVE-2024-1709 being exploited?

Yes. CISA added CVE-2024-1709 to the Known Exploited Vulnerabilities catalog on 22 Feb 2024, which means there is reliable evidence of exploitation in the wild.

Is CVE-2024-1709 used in ransomware attacks?

Yes, CISA lists it as known to be used in ransomware campaigns.

How do I fix CVE-2024-1709?

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. 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 February 2024 · ConnectWise scorecard · act-now radar.

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