CVE-2021-41089

mediumpriority · track · 25EPSS 0.003 · 20 %ileDEEURUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.29% (20th) EPSS
CVSS 4.4 · medium
Is it mine?
20 products
Check your exposure
Who says so?
8 sources
cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-22

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.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

02

cvss

Technical severity, 0–10. One row per scoring source.

6.3
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 2.8–6.3

v2.04.4mediumAV:L/AC:M/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 3.4 · impact 6.4
v3.16.3mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:Lprimary · NVD / NIST USexploitability 2 · impact 3.7
v3.12.8lowCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N/E:P/RL:O/RC:Csecondary · CISA US
v3.16.3mediumAV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:Lsecondary · FSTEC (BDU) RU
v3.12.8lowCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:Nsecondary · ENISA EU
v3.12.8lowCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:Nsecondary · security-advisories@github.comexploitability 1.1 · impact 1.4
v3.12.8lowCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:Nsecondary · OSV
v3.12.8lowCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N/E:P/RL:O/RC:Csecondary · Siemens ProductCERT DE
v3.15.8mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L/E:Usecondary · CVSS-BT (t0sche)
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-281USprimaryCWE-281USCWE-281USCWE-281USCWE-281US
04

affected products (20)

Products and version ranges known to be affected.

05

advisories (6)

Vendor and ecosystem advisories describing this.

  • SSA-222547SSA-222547: Third-Party Component Vulnerabilities in SCALANCE LPE9403 before V2.02022-06-14csaf · siemens_psirtDE

    Multiple vulnerabilities in the third-party components CivetWeb, Docker, Linux Kernel and systemd could allow an attacker to impact SCALANCE LPE9403 confidentiality, integrity and availability. Siemens has released an update for the SCALANCE LPE9403 and recommends to update to the latest version.

  • WID-SEC-W-2022-1738IBM InfoSphere Information Server: Mehrere SchwachstellenDeutsch2022-10-16csaf · cert_bundDE

    Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in IBM InfoSphere Information Server ausnutzen, um seine Privilegien zu erweitern, beliebigen Programmcode auszuführen, einen Cross-Site-Scripting-Angriff durchzuführen, Informationen offenzulegen, einen Denial of Service Zustand herbeizuführen, Dateien zu manipulieren oder Sicherheitsvorkehrungen zu umgehen.

  • WID-SEC-W-2023-1124docker: Mehrere SchwachstellenDeutsch2021-10-04csaf · cert_bundDE

    Ein lokaler Angreifer kann mehrere Schwachstellen in docker ausnutzen, um seine Privilegien zu erhöhen oder Informationen offenzulegen.

  • GHSA-v994-f8vw-g7j4`docker cp` allows unexpected chmod of host files in Moby Docker Engine2024-06-10ghsa · osvUS

    ## Impact 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. ## Patches 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. ## Workarounds Ensure you only run trusted containers. ## Credits The Moby project would like to thank Lei Wang and Ruizhi Xiao for responsibly disclosing this issue in accordance with the [Moby security policy](https://github.com/moby/moby/blob/master/SECURITY.md). ## For more information If you have any questions or comments about this advisory: * [Open an issue](https://github.com/moby/moby/issues/new) * Email us at  security@docker.com  if you think you’ve found a security bug

  • ICSA-22-167-09Siemens SCALANCE LPE9403 Third-Party Vulnerabilities2022-06-14icsa · cisa_csaf_otUS

    Multiple vulnerabilities in the third-party components CivetWeb, Docker, Linux Kernel and systemd could allow an attacker to impact SCALANCE LPE9403 confidentiality, integrity and availability. Siemens has released an update for the SCALANCE LPE9403 and recommends to update to the latest version.

  • GO-2024-2913Unexpected chmod of host files via 'docker cp' in Moby Docker Engine in github.com/docker/docker2024-06-14vendor · osvUS

    Unexpected chmod of host files via 'docker cp' in Moby Docker Engine in github.com/docker/docker

06

also known as (6)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bduosvcert_bundcisa_csaf_otnvdsiemens_psirtNVDCVE.orgMITRE
published 2021-10-04modified 2026-06-17
09

references (27)

External citations — patches, advisories, analysis.

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