No exploitation reportedFix available

CVE-2021-36042

No exploitation reported by the sources we read.

Published2021-09-01
WeaknessCWE-20 · CWE-434

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Magento Commerce versions 2.4.2 (and earlier), 2.4.2-p1 (and earlier) and 2.3.7 (and earlier) are affected by an improper input validation vulnerability in the API File Option Upload Extension. An attacker with Admin privileges can achieve unrestricted file upload which can result in remote code execution.

Timeline

dates in UTC

2021-09-0115:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-36042?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-36042?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Adobe adobe commerce

Branch	Affected	Fixed in	Source
2.3	≥ 2.3.0, ≤ 2.3.7	no fix published	NVD
2.4	≥ 2.4.0, ≤ 2.4.2	no fix published	NVD
2.4	= 2.4.2	no fix published	NVD

Magento

Branch	Affected	Fixed in	Source
2.3	≥ 2.3.0, ≤ 2.3.7	no fix published	NVD
2.4	≥ 2.4.0, ≤ 2.4.2	no fix published	NVD
2.4	= 2.4.2	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

helpx.adobe.comPatch · Vendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CNACVSS 3.19.1read 2026-10-23
NVDCVSS 3.17.2read 2026-10-23
NVDCVSS 2.06.5read 2026-10-23
CNAweakness (CWE)CWE-20read 2026-10-23
NVDweakness (CWE)CWE-20, CWE-434read 2026-10-23
FIRST EPSSEPSS score2.5 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Published: 2021-09-01
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2021-36042?

Is CVE-2021-36042 actively exploited?

Active exploitation of CVE-2021-36042 has not been confirmed. Its EPSS score was 2.5% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-36042?

CVE-2021-36042 has a CVSS v3 base score of 7.2 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

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