CVE-2015-4553

HIGH

dedecms < 5.7-sp1 - Unrestricted File Upload

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2015-4553. PoCs published by zise.

AI-analyzed exploit summary This exploit leverages variable coverage in Dedecms to overwrite files and achieve remote code execution by manipulating the `install_demo_name` and `updateHost` parameters to write arbitrary content to a file.

Description

A file upload issue exists in DeDeCMS before 5.7-sp1, which allows malicious users getshell.

Exploits (1)

exploitdb WORKING POC
by zise · textwebappsphp
https://www.exploit-db.com/exploits/37423

This exploit leverages variable coverage in Dedecms to overwrite files and achieve remote code execution by manipulating the `install_demo_name` and `updateHost` parameters to write arbitrary content to a file.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Dedecms 5.7-sp1 and older versions
No auth needed
Prerequisites: Access to the `/install/index.php` or `/install/index.php.bak` endpoint · Ability to host a malicious file on an external server
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Third Party Advisory, VDB Entry x_refsource_misc
http://www.securityfocus.com/bid/75285
Exploit, Mailing List, Third Party Advisory x_refsource_misc
http://seclists.org/fulldisclosure/2015/Jun/47
Exploit, Third Party Advisory, VDB Entry x_refsource_misc
https://www.exploit-db.com/exploits/37423/

Scores

CVSS v3 8.8
EPSS 0.5674
EPSS Percentile 98.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-434
Status published
Products (2)
dedecms/dedecms 5.7 (2 CPE variants)
dedecms/dedecms < 5.6
Published Jan 06, 2020
Tracked Since Feb 18, 2026