How severe is CVE-2021-21013?

CVE-2021-21013 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2021-21013 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-21013?

CVE-2021-21013 primarily affects Adobe Magento. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-21013?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-21013 published?

CVE-2021-21013 was published on 2021-01-13 and last updated on 2026-06-17.

CVE-2021-21013

CVE-2021-21013 is a high-severity vulnerability in Adobe Magento with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-863.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 5.5
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-863
Affected product: Adobe Magento
Published: 2021-01-13
Last modified: 2026-06-17

Description

Magento versions 2.4.1 (and earlier), 2.4.0-p1 (and earlier) and 2.3.6 (and earlier) are vulnerable to an insecure direct object vulnerability (IDOR) in the customer API module. Successful exploitation could lead to sensitive information disclosure and update arbitrary information on another user's account.

Frequently asked questions

What is CVE-2021-21013?: Magento versions 2.4.1 (and earlier), 2.4.0-p1 (and earlier) and 2.3.6 (and earlier) are vulnerable to an insecure direct object vulnerability (IDOR) in the customer API module. Successful exploitation could lead to sensitive information disclosure and update arbitrary information on another user's account.
How severe is CVE-2021-21013?: CVE-2021-21013 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2021-21013 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-21013?: CVE-2021-21013 primarily affects Adobe Magento. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-21013?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-21013 published?: CVE-2021-21013 was published on 2021-01-13 and last updated on 2026-06-17.

References

https://helpx.adobe.com/security/products/magento/apsb21-08.html

Affected products (2)

cpe:2.3:a:adobe:magento:*:*:*:*:commerce:*:*:*
cpe:2.3:a:adobe:magento:*:*:*:*:open_source:*:*:*

More vulnerabilities in Adobe Magento

CVE-2024-45115 — Critical (CVSS 9.8): Adobe Commerce versions 2.4.7-p2, 2.4.6-p7, 2.4.5-p9, 2.4.4-p10 and earlier are affected by an Improper Authentication…
CVE-2024-34102 — Critical (CVSS 9.8): Adobe Commerce versions 2.4.7, 2.4.6-p5, 2.4.5-p7, 2.4.4-p8 and earlier are affected by an Improper Restriction of XML…
CVE-2022-24086 — Critical (CVSS 9.8): Adobe Commerce versions 2.4.3-p1 (and earlier) and 2.3.7-p2 (and earlier) are affected by an improper input validation…
CVE-2025-54236 — Critical (CVSS 9.1): Adobe Commerce versions 2.4.9-alpha2, 2.4.8-p2, 2.4.7-p7, 2.4.6-p12, 2.4.5-p14, 2.4.4-p15 and earlier are affected by…
CVE-2025-24434 — Critical (CVSS 9.1): Adobe Commerce versions 2.4.8-beta1, 2.4.7-p3, 2.4.6-p8, 2.4.5-p10, 2.4.4-p11 and earlier are affected by an Incorrect…
CVE-2024-34108 — Critical (CVSS 9.1): Adobe Commerce versions 2.4.7, 2.4.6-p5, 2.4.5-p7, 2.4.4-p8 and earlier are affected by an Improper Input Validation…

All CVEs affecting Adobe Magento →

Other CWE-863 (Incorrect Authorization) vulnerabilities

CVE-2026-48286 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) versions 7.4.3 build 9396 and earlier are affected by an Incorrect Authorization…
CVE-2026-48303 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) versions 7.4.3 build 9394 and earlier are affected by an Incorrect Authorization…
CVE-2026-44330 — Critical (CVSS 10.0): free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF mounts the…
CVE-2026-46595 — Critical (CVSS 10.0): Previously, CVE-2024-45337 fixed an authorization bypass for misused ssh server configurations; if any other type of…
CVE-2026-33105 — Critical (CVSS 10.0): Improper authorization in Microsoft Azure Kubernetes Service allows an unauthorized attacker to elevate privileges over…
CVE-2026-32213 — Critical (CVSS 10.0): Improper authorization in Azure AI Foundry allows an unauthorized attacker to elevate privileges over a network.

Browse all CWE-863 (Incorrect Authorization) vulnerabilities →