CVE-2025-4800
Published: 28 May 2025
Summary
CVE-2025-4800 is a high-severity Unrestricted Upload of File with Dangerous Type (CWE-434) vulnerability in Stylemixthemes (inferred from references). Its CVSS base score is 8.8 (High).
Operationally, ranked in the top 17.9% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
The MasterStudy LMS Pro plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the stm_lms_add_assignment_attachment function. This affects all versions up to and including 4.7.0 and is tracked as CVE-2025-4800 with a CVSS score of 8.8 and CWE-434.
Authenticated attackers with Subscriber-level access or higher can exploit the flaw to upload arbitrary files to the server, which may enable remote code execution on the affected site.
The listed references point to the vendor changelog, plugin homepage, and a Wordfence threat intelligence entry, but provide no explicit mitigation details in the available data. The EPSS score remains flat at 0.0159 with no observed rise after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-16317
Vulnerability details
The MasterStudy LMS Pro plugin for WordPress is vulnerable to arbitrary file uploads due to a missing file type validation in the stm_lms_add_assignment_attachment function in all versions up to, and including, 4.7.0. This makes it possible for authenticated attackers, with…
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Subscriber-level access and above, to upload arbitrary files on the affected site's server, which may make remote code execution possible.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Requiring identifiable owners for portable devices reduces the attack surface for unrestricted uploads of dangerous file types via anonymous media.
Dangerous file uploads can be detonated in the chamber to determine malice before any production write or execution occurs.
Prevents unrestricted writing of arbitrary or malicious firmware by keeping hardware write-protect enabled except under tightly controlled manual procedures.
Scans files from external sources on download/open/execute, blocking unrestricted uploads of dangerous file types.