Vulnerability record · CVE-2019-3999 · published 25 February 2020

CVE-2019-3999: Druva insync client os command injection vulnerability

Druva · Insync Client

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.

7.8 CVSS 3.1 High EPSS 8.6% · top 5.1% CWE-78 · OS command injection

7.8CVSS 3.1 base score, v2 7.2

8.6%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

6References, 6 tagged exploit

17 Jun 2026Last modified by NVD

Description

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Insync Client Druva

References

Link	Tags
http://packetstormsecurity.com/files/157493/Druva-inSync-Windows-Client-6.5.2-Privilege-Escalation.html	ExploitThird Party AdvisoryVDB Entry
http://packetstormsecurity.com/files/157680/Druva-inSync-inSyncCPHwnet64.exe-RPC-Type-5-Privilege-Escalation.html	ExploitThird Party AdvisoryVDB Entry
https://www.tenable.com/security/research/tra-2020-12	ExploitThird Party Advisory
http://packetstormsecurity.com/files/157493/Druva-inSync-Windows-Client-6.5.2-Privilege-Escalation.html	ExploitThird Party AdvisoryVDB Entry
http://packetstormsecurity.com/files/157680/Druva-inSync-inSyncCPHwnet64.exe-RPC-Type-5-Privilege-Escalation.html	ExploitThird Party AdvisoryVDB Entry
https://www.tenable.com/security/research/tra-2020-12	ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2019-3999), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.