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Vulnerability record · CVE-2021-21285 · published 2 February 2021

CVE-2021-21285: Docker uncontrolled resource consumption vulnerability

Docker · Docker

In Docker before versions 9.03.15, 20.10.3 there is a vulnerability in which pulling an intentionally malformed Docker image manifest crashes the dockerd daemon. Versions 20.10.3 and 19.03.15 contain patches that prevent the daemon from crashing.

6.5 CVSS 3.1 Medium EPSS 3.3% · top 12.0% CWE-400 · Uncontrolled resource consumptionCWE-754 · CWE-754
6.5CVSS 3.1 base score, v2 4.3
3.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
16References
17 Jun 2026Last modified by NVD

Description

In Docker before versions 9.03.15, 20.10.3 there is a vulnerability in which pulling an intentionally malformed Docker image manifest crashes the dockerd daemon. Versions 20.10.3 and 19.03.15 contain patches that prevent the daemon from crashing.

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

Affected products

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

References

LinkTags
https://docs.docker.com/engine/release-notes/#20103 Release NotesVendor Advisory
https://github.com/moby/moby/commit/8d3179546e79065adefa67cc697c09d0ab137d30 PatchThird Party Advisory
https://github.com/moby/moby/releases/tag/v19.03.15 Release NotesThird Party Advisory
https://github.com/moby/moby/releases/tag/v20.10.3 Release NotesThird Party Advisory
https://github.com/moby/moby/security/advisories/GHSA-6fj5-m822-rqx8 Third Party Advisory
https://security.gentoo.org/glsa/202107-23 PatchThird Party Advisory
https://security.netapp.com/advisory/ntap-20210226-0005/ Third Party Advisory
https://www.debian.org/security/2021/dsa-4865 Third Party Advisory
https://docs.docker.com/engine/release-notes/#20103 Release NotesVendor Advisory
https://github.com/moby/moby/commit/8d3179546e79065adefa67cc697c09d0ab137d30 PatchThird Party Advisory
https://github.com/moby/moby/releases/tag/v19.03.15 Release NotesThird Party Advisory
https://github.com/moby/moby/releases/tag/v20.10.3 Release NotesThird Party Advisory
https://github.com/moby/moby/security/advisories/GHSA-6fj5-m822-rqx8 Third Party Advisory
https://security.gentoo.org/glsa/202107-23 PatchThird Party Advisory
https://security.netapp.com/advisory/ntap-20210226-0005/ Third Party Advisory
https://www.debian.org/security/2021/dsa-4865 Third Party Advisory

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

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Source: NIST National Vulnerability Database (record CVE-2021-21285), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.