Home/CVE/In Docker before versions 9.03.15, 20.10.3 there is a vulnerability in which pulling an intentionally malformed Docker i
CVE

CVE-2021-21285

In Docker before versions 9.03.15, 20.10.3 there is a vulnerability in which pulling an intentionally malformed Docker i

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.

MEDIUM · CVSS 6.5 EPSS 0.00351
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules1 YARA rules0
⬡

Weakness Classification

CWE-400Uncontrolled Resource Consumption
CWE-754Improper Check for Unusual or Exceptional Conditions
▤

Affected Products & Versions

4
docker< 19.03.15
docker>= 20.0.0 and < 20.10.3
debian linuxall versions
netapp e-series santricity os controller>= 11.0 and <= 11.60.3
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Go github.com/moby/moby MODERATE fixed in 19.3.15
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productlowDocker Container Discovery Via Dockerenv Listing
▣

Scoring & Timeline

6.5
MEDIUM · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD02 Feb 2021 · 06:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
⚑

Vendor Advisories

10
suse-csafSUSE-SU-2025:03545-1
suse-csafSUSE-SU-2025:03540-1
msrcCVE-2021-21285
suse-csafopenSUSE-SU-2021:1954-1
suse-csafopenSUSE-SU-2021:0878-1
🔗

References & Sources

8
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://docs.docker.com/engine/release-notes/#20103Release NotesVendor Advisory
https://github.com/moby/moby/commit/8d3179546e79065adefa67cc697c09d0ab137d30PatchThird Party Advisory
https://github.com/moby/moby/releases/tag/v19.03.15Release NotesThird Party Advisory
https://github.com/moby/moby/releases/tag/v20.10.3Release NotesThird Party Advisory
https://github.com/moby/moby/security/advisories/GHSA-6fj5-m822-rqx8Third Party Advisory
https://security.gentoo.org/glsa/202107-23PatchThird Party Advisory
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