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Fencer Intel
critical 9.1

CVE-2021-21018 json

Magnto Commerce Unauthorized Data Modification Could Lead To Arbitrary Code Execution

published 5y ago modified 2mo ago also BIT-magento-2021-21018 , EUVD-2022-5231 , GHSA-rv48-v862-mp92

cvss
9.1
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
3.9%
EPSS 3.9% chance of exploitation in 30 days, percentile 90%
public exploits
0
none known

Summary

Magento versions 2.4.1 (and earlier), 2.4.0-p1 (and earlier) and 2.3.6 (and earlier) are vulnerable to OS command injection via the scheduled operation module. Successful exploitation could lead to arbitrary code execution by an authenticated attacker. Access to the admin console is required for successful exploitation.

Patch / fix

  • packagist magento/community-edition 2.3.6, 2.4.1-p1
  • bitnami magento 2.3.6, 2.4.2
  • magento magento 2.3.6

Is CVE-2021-21018 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Exploit prediction

3.92% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.0 9.1 CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
GitHub 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
NVD 2.0 9.0 AV:N/AC:L/Au:S/C:C/I:C/A:C
OSV 3.0 9.1 CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
packagist magento/community-edition
<2.3.6
>=2.4.0, <2.4.1-p1
2.3.6
2.4.1-p1
bitnami magento
<2.3.6
>=2.4.0, <2.4.2
2.3.6
2.4.2

Affected products

  • Adobe Magento Commerce

Classification

Weakness
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.