What is CVE-2018-20699?

CVE-2018-20699 is a medium-severity vulnerability in Docker Engine, classified under Uncontrolled Resource Consumption. CVSS score: 4.9/10. Published 2019-01-12.

How severe is CVE-2018-20699?

Medium severity. CVSS v3 base score is 4.9 out of 10.

Resource exhaustion in Docker Engine

CVE-2018-20699

Docker Engine before 18.09 allows attackers to cause a denial of service (dockerd memory consumption) via a large integer in a --cpuset-mems or --cpuset-cpus value, related to daemon/daemon_unix.go, pkg/parsers/parsers.go, and pkg/sysinfo/sysinfo.go.

Vulnerability class: DoS (Denial of Service)

Published 2019-01-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.022 (82.6th percentile), scored 2026-10-23.

Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 82.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000

Affected products

Docker Engine
Red Hat Enterprise Linux Server — versions 7.0

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

github.com/docker/engine/pull/70 (Patch, Third Party Advisory)
github.com/moby/moby/pull/37967 (Patch, Third Party Advisory)
access.redhat.com/errata/RHSA-2019:0487 (vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2018-20699?: CVE-2018-20699 is a medium-severity vulnerability in Docker Engine, classified under Uncontrolled Resource Consumption. CVSS score: 4.9/10. Published 2019-01-12.
How severe is CVE-2018-20699?: Medium severity. CVSS v3 base score is 4.9 out of 10.