CVE-2021-21020

mediumpriority · track · 18EPSS 0.024 · 84 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

2.41% (84th) EPSS

CVSS 4.3 · medium

Is it mine?

19 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-27

Magento versions 2.4.1 (and earlier), 2.4.0-p1 (and earlier) and 2.3.6 (and earlier) are vulnerable to an access control bypass vulnerability in the Login as Customer module. Successful exploitation could lead to unauthorized access to restricted resources.

cvss

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

5.3

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.7–5.3

v2.04.3mediumAV:N/AC:M/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 8.6 · impact 2.9

v2.03.7lowAV:N/AC:M/Au:N/C:N/I:P/A:N/E:Usecondary · CVSS-BT (t0sche)

v3.05.3mediumCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:Nsecondary · ENISA EU

v3.05.3mediumCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:Nsecondary · psirt@adobe.comexploitability 1.6 · impact 3.6

v3.15.3mediumAV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:Nsecondary · FSTEC (BDU) RU

v3.15.3mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:Nsecondary · OSV

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-284USCWE-284USCWE-284US

affected products (19)

Products and version ranges known to be affected.

Adobe Magento Commerce≤ unspecified ≤2.4.0-p1enisa_euvdEU
Adobe Magento Commerce≤ unspecified ≤2.3.6enisa_euvdEU
Adobe Magento Commerce≤ unspecified ≤Noneenisa_euvdEU
Adobe Magento Commerce≤ unspecified ≤2.4.1enisa_euvdEU
Adobe Systems Inc. Magento Commerce≤ 2.3.6-p1fstec_bduRU
Adobe Systems Inc. Magento Commerce≤ 2.4.2fstec_bduRU
Adobe Systems Inc. Magento Commerce≤ 2.4.1-p1fstec_bduRU
Adobe Systems Inc. Magento Open Source≤ 2.4.1-p1fstec_bduRU
Adobe Systems Inc. Magento Open Source≤ 2.3.6-p1fstec_bduRU
Adobe Systems Inc. Magento Open Source≤ 2.4.2fstec_bduRU
magento magento< 2.3.6nvdUScpe:2.3:a:magento:magento:*:*:*:*:*:*:*:*
magento magento= 2.3.6nvdUScpe:2.3:a:magento:magento:*:*:*:*:*:*:*:*
magento magento= 2.4.0nvdUScpe:2.3:a:magento:magento:*:*:*:*:*:*:*:*
magento magento= 2.4.1nvdUScpe:2.3:a:magento:magento:*:*:*:*:*:*:*:*
Bitnami magento< 2.3.6osvUSpkg:bitnami/magento
Bitnami magento2.4.0 → 2.4.1osvUSpkg:bitnami/magento
Packagist magento/community-edition< 2.3.6osvUSpkg:composer/magento/community-edition
Packagist magento/community-edition2.4.0 → 2.4.1-p1osvUSpkg:composer/magento/community-edition
Packagist magento/project-community-edition≤ 2.0.2osvUSpkg:composer/magento/project-community-edition

advisories (2)

Vendor and ecosystem advisories describing this.

GHSA-2j6v-829g-885qMagento Improper Access Control2022-05-24ghsa · osvUS
Magento versions 2.4.1 (and earlier), 2.4.0-p1 (and earlier) and 2.3.6 (and earlier) are vulnerable to an access control bypass vulnerability in the Login as Customer module. Successful exploitation could lead to unauthorized access to restricted resources.
BIT-magento-2021-21020Magento Commerce Improper Access Control Vulnerability2024-03-06vendor · osvUS
Magento versions 2.4.1 (and earlier), 2.4.0 (and earlier) and 2.3.6 (and earlier) are vulnerable to an access control bypass vulnerability in the Login as Customer module. Successful exploitation could lead to unauthorized access to restricted resources.

also known as (6)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu osv nvd NVD CVE.org MITRE

published 2021-02-11modified 2026-06-17

references (6)

External citations — patches, advisories, analysis.

scry

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