CVE-2019-3999

Name: CVE-2019-3999
Creator: NVD / NIST
Published: 2020-02-25T19:15:11.693+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 8.57%

Last modified Jun 17, 2026

CVE-2019-3999 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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.. EPSS estimates a 8.57% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

8.57%

94.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-78

Affected Software

Vendor	Product	Versions
Druva	Insync Client	6.5.0

References

http://packetstormsecurity.com/files/157493/Druva-inSync-Windows-Client-6.5.2-Privilege-Escalation.htmlExploit, Third Party Advisory, VDB Entry
http://packetstormsecurity.com/files/157680/Druva-inSync-inSyncCPHwnet64.exe-RPC-Type-5-Privilege-Escalation.htmlExploit, Third Party Advisory, VDB Entry
https://www.tenable.com/security/research/tra-2020-12Exploit, Third Party Advisory
http://packetstormsecurity.com/files/157493/Druva-inSync-Windows-Client-6.5.2-Privilege-Escalation.htmlExploit, Third Party Advisory, VDB Entry
http://packetstormsecurity.com/files/157680/Druva-inSync-inSyncCPHwnet64.exe-RPC-Type-5-Privilege-Escalation.htmlExploit, Third Party Advisory, VDB Entry
https://www.tenable.com/security/research/tra-2020-12Exploit, Third Party Advisory

Timeline

Published: Feb 25, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-3999?

How severe is CVE-2019-3999?

CVE-2019-3999 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 8.57% probability of exploitation in the next 30 days.

How do I fix CVE-2019-3999?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-3999?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST