How severe is CVE-2021-36036?

CVE-2021-36036 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-36036 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-36036?

CVE-2021-36036 primarily affects Magento. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-36036?

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-2021-36036 published?

CVE-2021-36036 was published on 2023-09-06 and last updated on 2026-06-17.

CVE-2021-36036

CVE-2021-36036 is a high-severity vulnerability in Magento with a CVSS 3.x base score of 7.2. 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-284.

Key facts

Severity: High (CVSS 3.x base score 7.2)
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-284
Affected product: Magento
Published: 2023-09-06
Last modified: 2026-06-17

Description

Magento versions 2.4.2 (and earlier), 2.4.2-p1 (and earlier) and 2.3.7 (and earlier) are affected by an improper access control vulnerability within Magento's Media Gallery Upload workflow. By storing a specially crafted file in the website gallery, an authenticated attacker with administrative privilege can gain access to delete the .htaccess file. This could result in the attacker achieving remote code execution.

Frequently asked questions

What is CVE-2021-36036?: Magento versions 2.4.2 (and earlier), 2.4.2-p1 (and earlier) and 2.3.7 (and earlier) are affected by an improper access control vulnerability within Magento's Media Gallery Upload workflow. By storing a specially crafted file in the website gallery, an authenticated attacker with administrative privilege can gain access to delete the .htaccess file. This could result in the attacker achieving remote code execution.
How severe is CVE-2021-36036?: CVE-2021-36036 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-36036 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-36036?: CVE-2021-36036 primarily affects Magento. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-36036?: 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-2021-36036 published?: CVE-2021-36036 was published on 2023-09-06 and last updated on 2026-06-17.

References

https://helpx.adobe.com/security/products/magento/apsb21-64.html

Affected products (8)

cpe:2.3:a:magento:magento:*:*:*:*:commerce:*:*:*
cpe:2.3:a:magento:magento:*:*:*:*:open_source:*:*:*
cpe:2.3:a:magento:magento:2.3.7:-:*:*:commerce:*:*:*
cpe:2.3:a:magento:magento:2.3.7:-:*:*:open_source:*:*:*
cpe:2.3:a:magento:magento:2.4.2:-:*:*:commerce:*:*:*
cpe:2.3:a:magento:magento:2.4.2:-:*:*:open_source:*:*:*
cpe:2.3:a:magento:magento:2.4.2:p1:*:*:commerce:*:*:*
cpe:2.3:a:magento:magento:2.4.2:p1:*:*:open_source:*:*:*

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