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CVE-2019-16516

MediumPublished

An issue was discovered in ConnectWise Control (formerly known as ScreenConnect) 19.3.25270.7185. There is a user enumeration vulnerability, allowing an...

Published: Jan 23, 2020
Updated: Aug 5, 2024
Assigning CNA: mitre
Evidence observed: Jan 5, 2022

Primary CVSS

5.3/ 10Medium

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS probability estimate

19.1%

Moderate · next 30 days

Percentile: 97.3%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

An issue was discovered in ConnectWise Control (formerly known as ScreenConnect) 19.3.25270.7185. There is a user enumeration vulnerability, allowing an unauthenticated attacker to determine with certainty if an account exists for a given username.

Sources

ScreenConnect-UserEnumExploit
ConnectWise also known as ScreenConnect CVE-2019-16516
ConnectWise Control 19.2.24707 - Username EnumerationExploit
Luca Cuzzolin · multiple · Jan 5, 2022

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