ScreenConnect — Connectwise Control Vulnerability
CVE-2019-16516
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.191 (97.2th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.191 · newest: 0.191 · change: 0.000
Affected products
- Connectwise Control — versions 19.3.25270.7185
Weakness classification (CWE)
Public proof-of-concept exploits
References
- know.bishopfox.com/advisories (Third Party Advisory)
- know.bishopfox.com/advisories/connectwise-control (Exploit, Third Party Advisory)
- blog.huntresslabs.com/validating-the-bishop-fox-findings-in-connectwise-control… (Exploit, Third Party Advisory)
- www.crn.com/news/managed-services/connectwise-control-msp-security-vulnerabilit… (Third Party Advisory)
- www.crn.com/slide-shows/managed-services/connectwise-control-attack-chain-explo… (Third Party Advisory)
- packetstormsecurity.com/files/165432/ConnectWise-Control-19.2.24707-Username-En… (Exploit, VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-16516?
- CVE-2019-16516 is a medium-severity vulnerability in Connectwise Control, classified under Observable Discrepancy. CVSS score: 5.3/10. Published 2020-01-23.
- How severe is CVE-2019-16516?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2019-16516 known to be exploited?
- 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.