CVE-2017-20198 CRITICAL

CVE-2017-20198: DC/OS Marathon UI < 1.9.0 Unauthenticated RCE via Docker Mount Abuse

Vendor D2Iq, Inc.
Product DC/OS Marathon
Weakness CWE-732
Published July 23, 2025
Last update May 15, 2026

CVSS base score

9.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

The Marathon UI in DC/OS < 1.9.0 allows unauthenticated users to deploy arbitrary Docker containers. Due to improper restriction of volume mount configurations, attackers can deploy a container that mounts the host's root filesystem (/) with read/write privileges. When using a malicious Docker image, the attacker can write to /etc/cron.d/ on the host, achieving arbitrary code execution with root privileges. This impacts any system where the Docker daemon honors Marathon container configurations without policy enforcement.

Key dates

02Disclosure timeline

July 23, 2025 CVE published
May 15, 2026 Record updated