CVE-2019-3999

Improper neutralization of special elements used in an OS command in Druva inSync Windows Client...

7.8 HighPublic exploit

Improper neutralization of special elements used in an OS command in Druva inSync Windows Client 6.5.0 allows a local, unauthenticated attacker to execute arbitrary operating system commands with SYSTEM privileges.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

8.57%Down 54.2 points since Apr 14, 2021

What each source reports

NVD Score used 7.8

Record: CVE-2019-3999
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 7.2 HighAV:L/AC:L/Au:N/C:C/I:C/A:C
Weakness: CWE-78
Updated: 2026-11-02

CVE List No score

Record: CVE-2019-3999
Updated: 2026-11-02

EUVDEUVD-2019-13606 No score

Record: EUVD-2019-13606
Updated: 2026-11-03

GitHub AdvisoriesGHSA-xm72-wm3m-qgm7 No score

Improper neutralization of special elements used in an OS command in Druva inSync Windows Client...

Record: GHSA-xm72-wm3m-qgm7
Weakness: CWE-78
Updated: 2026-11-02

Affected products

druva insync client

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Exploit-DB	Druva inSync Windows Client 6.5.2 - Local Privilege Escalation	2020-04-29
Metasploit	Druva inSync inSyncCPHwnet64.exe RPC Type 5 Privilege Escalation	2020-02-25

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, Exploit-DB, GitHub Advisories, Metasploit, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2019-3999 is a high vulnerability (CVSS 7.8) in Druva Insync Client, published February 25, 2020. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 8.57%, the 95th percentile. No source names a fixed version.