Unauthenticated code execution via unrestricted PHP upload
Published Jun 14, 2022 · Updated Jul 9, 2026
Unrestricted file upload in Kreado Kreasfero 1.5 allows remote attackers to execute arbitrary code by uploading a malicious PHP file. The media upload path accepts a PHP payload without adequately restricting its dangerous file type and stores it in the web-accessible media directory. No authentication or user interaction is required, and requesting the uploaded script executes attacker-controlled PHP in the web server context.
Summary
What happened
Unrestricted file upload in Kreado Kreasfero 1.5 allows remote attackers to execute arbitrary code by uploading a malicious PHP file. The media upload path accepts a PHP payload without adequately restricting its dangerous file type and stores it in the web-accessible media directory. No authentication or user interaction is required, and requesting the uploaded script executes attacker-controlled PHP in the web server context.
The record
- CVE
- CVE-2021-42675
- Published
- Jun 14, 2022
- Updated
- Jul 9, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-434, T1190, T1505.003
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 14, 2022CVE publishedPublication date reported by the CVE source.
- Jul 9, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- 1ofThegutHakrs CVE-2021-42675 exploit postproof of concept · unverified
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Technologies
Your stack
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Your stack
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