CVE-2019-20853

Name: CVE-2019-20853
Creator: NVD / NIST
Published: 2020-06-19T15:15:10.307+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.23%

Last modified Jun 17, 2026

CVE-2019-20853 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. An issue was discovered in Mattermost Packages before 5.16.3. A Droplet could allow Internet access to a service that has a remote code execution problem.. EPSS estimates a 2.23% chance of exploitation in the next 30 days.

Description

An issue was discovered in Mattermost Packages before 5.16.3. A Droplet could allow Internet access to a service that has a remote code execution problem.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

2.23%

80.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-668

Affected Software

Vendor	Product	Versions
Mattermost	Mattermost Packages	< 5.16.3

References

https://mattermost.com/security-updates/Vendor Advisory
https://mattermost.com/security-updates/Vendor Advisory

Timeline

Published: Jun 19, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-20853?

An issue was discovered in Mattermost Packages before 5.16.3. A Droplet could allow Internet access to a service that has a remote code execution problem.

How severe is CVE-2019-20853?

CVE-2019-20853 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.23% probability of exploitation in the next 30 days.

How do I fix CVE-2019-20853?

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-2019-20853?

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

Scan your code now

Source: NVD / NIST