CVE-2019-16516

MEDIUM

ConnectWise Control <19.3.25270.7185 - Info Disclosure

Title source: llm

Description

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.

Exploits (2)

exploitdb WORKING POC

by Luca Cuzzolin · pythonremotemultiple

https://www.exploit-db.com/exploits/50618

View Code ZIP pw:eip

nomisec SCANNER

by czz · poc

https://github.com/czz/ScreenConnect-UserEnum

View Code ZIP pw:eip

References (6)

[Exploit, Third Party Advisory, VDB Entry] http://packetstormsecurity.com/files/165432/ConnectWise-Control-19.2.24707-Username-Enumeration.html

[Exploit, Third Party Advisory] https://blog.huntresslabs.com/validating-the-bishop-fox-findings-in-connectwise-control-9155eec36a34

[Third Party Advisory] https://know.bishopfox.com/advisories

[Exploit, Third Party Advisory] https://know.bishopfox.com/advisories/connectwise-control

[Third Party Advisory] https://www.crn.com/news/managed-services/connectwise-control-msp-security-vulnerabilities-are-severe-bishop-fox

[Third Party Advisory] https://www.crn.com/slide-shows/managed-services/connectwise-control-attack-chain-exploit-20-questions-for-security-researcher-bishop-fox

Scores

CVSS v3 5.3

EPSS 0.3821

EPSS Percentile 97.2%

Attack Vector NETWORK

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

Details

CWE

CWE-203

Status published

Products (2)

connectwise/control 19.3.25270.7185

connectwise/control < 19.2.24707

Published Jan 23, 2020

Tracked Since Feb 18, 2026