CVE-2021-41089

LOWNVD 2.82.8—
EchelonGraph scoreMEDIUM confidence

This low-severity CVE scores 2.8 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 81% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Trending — 3 sources updated this week
2.8
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 2.8Exploit: NoneExposed: 0

A fix is available — apply it.

Moby is an open-source project created by Docker to enable software containerization. A bug was found in Moby (Docker Engine) where attempting to copy files using docker cp into a specially-crafted container can result in Unix file permission changes for existing files in the host’s filesystem, widening access to others. This bug does not directly allow files to be read, modified, or executed without an additional cooperating process. This bug has been fixed in Moby (Docker Engine) 20.10.9. Users should update to this version as soon as possible. Running containers do not need to be restarted.

CVSS v3
2.8
EG Score
2.8(medium)
EPSS
18.9%
KEV
Not listed

Published

October 4, 2021

Last Modified

November 21, 2024

References (10)

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuvim-syntax-docker (18.09.7-0ubuntu1~16.04.9+esm1) @ xenial2026-05-26ubuntu
redhatmigration-toolkit-virtualization/mtv-controller-rhel8:2.2.0-392021-12-09redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(2 across 1 ecosystem)
Go(2)
PackageVulnerable rangeFixed inDependents
github.com/docker/docker—20.10.9+incompatible—
github.com/moby/moby—20.10.9+incompatible—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(2)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 10× in last 7d / 48× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 104 total refreshes for this CVE.

  1. 2026-07-22 22:50 UTCEG score recompute
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Frequently asked(5)

What is CVE-2021-41089?
CVE-2021-41089 is a low vulnerability published on October 4, 2021. Moby is an open-source project created by Docker to enable software containerization. A bug was found in Moby (Docker Engine) where attempting to copy files using docker cp into a specially-crafted container can result in Unix file permission changes for existing files in the host’s filesystem,…
When was CVE-2021-41089 disclosed?
CVE-2021-41089 was first published in the National Vulnerability Database on October 4, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-41089 actively exploited?
CVE-2021-41089 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 18.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2021-41089?
CVE-2021-41089 has a CVSS v3 base score of 2.8 (NVD).
How do I remediate CVE-2021-41089?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-41089, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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