CVE-2019-16516

EPSS 19.1%

Vexday Risk Score

28Low

SSVC decision (CISA)

Attend

PoC available → attend closely

Exploit maturity

Proof of concept

Public proof of concept exists, but not yet automated.

CVSS —EPSS 19.1%KEV nãoPoC públicaNuclei —Metasploit —Patch —

Lifecycle

23 Jan 2020Published on NVD

17 Dec 2021Public PoC

Weaponization speed

694 daysto first PoC

Recommendation: Plan a near-term fix — a public PoC already exists.

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.

Affected products

n/a · n/a

public PoCs found — 3

githubgithub.com/czz/ScreenConnect-UserEnum★ 0 cve_referencepacketstormsecurity.com/files/165432/ConnectWise-Control-19.2.24707-Username-Enumeration.htmlunverified exploitdbwww.exploit-db.com/exploits/50618unverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

References

http://packetstormsecurity.com/files/165432/ConnectWise-Control-19.2.24707-Username-Enumeration.html https://blog.huntresslabs.com/validating-the-bishop-fox-findings-in-connectwise-control-9155eec36a34 https://know.bishopfox.com/advisories https://know.bishopfox.com/advisories/connectwise-control https://www.crn.com/news/managed-services/connectwise-control-msp-security-vulnerabilities-are-severe-bishop-fox https://www.crn.com/slide-shows/managed-services/connectwise-control-attack-chain-exploit-20-questions-for-security-researcher-bishop-fox