CVE-2021-21285

MediumCVSS 6.5/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-400 CWE-754

Affected software

Vendor	Product	Versions
moby	moby	< 19.03.15; >= 20.0.0, < 20.10.3

References

https://docs.docker.com/engine/release-notes/#20103Release Notes, Vendor Advisory
https://github.com/moby/moby/commit/8d3179546e79065adefa67cc697c09d0ab137d30Patch, Third Party Advisory
https://github.com/moby/moby/releases/tag/v19.03.15Release Notes, Third Party Advisory
https://github.com/moby/moby/releases/tag/v20.10.3Release Notes, Third Party Advisory
https://github.com/moby/moby/security/advisories/GHSA-6fj5-m822-rqx8Third Party Advisory
https://security.gentoo.org/glsa/202107-23Patch, Third Party Advisory
https://security.netapp.com/advisory/ntap-20210226-0005/Third Party Advisory
https://www.debian.org/security/2021/dsa-4865Third Party Advisory
https://docs.docker.com/engine/release-notes/#20103Release Notes, Vendor Advisory
https://github.com/moby/moby/commit/8d3179546e79065adefa67cc697c09d0ab137d30Patch, Third Party Advisory
https://github.com/moby/moby/releases/tag/v19.03.15Release Notes, Third Party Advisory
https://github.com/moby/moby/releases/tag/v20.10.3Release Notes, Third Party Advisory
https://github.com/moby/moby/security/advisories/GHSA-6fj5-m822-rqx8Third Party Advisory
https://security.gentoo.org/glsa/202107-23Patch, Third Party Advisory
https://security.netapp.com/advisory/ntap-20210226-0005/Third Party Advisory
https://www.debian.org/security/2021/dsa-4865Third Party Advisory

Timeline

Published: Feb 2, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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