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CVE-2019-16516

37
FAUCET Score

CVE-2019-16516 is a user enumeration vulnerability affecting ConnectWise Control (formerly ScreenConnect) versions up to 19.3.25270.7185. This flaw allows an unauthenticated attacker to confirm the existence of specific usernames on the system. Rated 5.3 MEDIUM on the CVSS scale, it presents a low-complexity network attack with no user interaction required, potentially leading to information disclosure. While not actively exploited in the wild and not listed in CISA's KEV catalog, a public exploit (EDB-50618) is available, though there is minimal community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 19.2.24707CPE matchmatch criteria
cpe:2.3:a:connectwise:control:*:*:*:*:*:*:*:*
19.3.25270.7185CPE matchmatch criteria
cpe:2.3:a:connectwise:control:19.3.25270.7185:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
19.10%
Probability of exploitation in next 30 days
EPSS Percentile
97.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
ExploitDB: EDB-50618 · Jan 5, 2022
This CVE's current EPSS score of 0.1910 is in the 97th percentile among its peer group of 23,701 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

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