CVE-2025-15495
Published: 09 January 2026
Summary
CVE-2025-15495 is a medium-severity Improper Access Control (CWE-284) vulnerability in Biggidroid Simple Php Cms. Its CVSS base score is 5.1 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 5.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 AC-3 (Access Enforcement) and SI-10 (Information Input Validation).
Deeper analysis
CVE-2025-15495 is a vulnerability in BiggiDroid Simple PHP CMS version 1.0 that affects an unknown function in the file /admin/editsite.php. It enables unrestricted file upload through manipulation of the image argument, as classified under CWE-284 (Improper Access Control) and CWE-434 (Unrestricted Upload of File with Dangerous Type). The issue was published on 2026-01-09 with a CVSS v3.1 base score of 4.7 (AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L).
A remote attacker can exploit this vulnerability over the network with low attack complexity and no user interaction required, but it necessitates high privileges (PR:H), such as administrative access. Successful exploitation allows limited impacts on confidentiality, integrity, and availability, potentially enabling malicious file uploads that could lead to further compromise depending on the uploaded content.
Advisories referenced in VulDB entries (ctiid.340273, id.340273, submit.725890) detail the issue, while a Gitee issue (IDGO28) and a GitHub repository (Asim-QAZi/RCE-Simplephpblog-biggiedroid) provide additional context and a public exploit. The vendor was contacted early for disclosure but did not respond, and no patches or official mitigations are mentioned.
The exploit has been made public and could be used in attacks against affected instances.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-1704
Vulnerability details
A vulnerability was found in BiggiDroid Simple PHP CMS 1.0. This impacts an unknown function of the file /admin/editsite.php. The manipulation of the argument image results in unrestricted upload. The attack can be launched remotely. The exploit has been made…
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public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Unrestricted file upload (CWE-434) in a public-facing PHP CMS admin endpoint directly enables web shell deployment (T1505.003) after exploiting the exposed application (T1190).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Enforces validation of uploaded file types and content on the image argument in editsite.php to block dangerous files.
Enforces access control policies that restrict what even privileged admin users may upload via /admin/editsite.php.
Scans or filters uploaded image files for malicious code before they are stored or executed on the CMS.