CVE-2018-17139

HIGH

UltimatePOS 2.5 - Unauthenticated Remote Code Execution via Arbitrary File Upload

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2018-17139. PoCs published by Renos Nikolaou.

AI-analyzed exploit summary This exploit demonstrates an arbitrary file upload vulnerability in UltimatePOS 2.5, allowing remote code execution by uploading a malicious PHP file disguised as an image. The attacker intercepts and modifies the upload request to change the file extension from .jpg to .php, enabling execution of system commands via a GET parameter.

Description

UltimatePOS 2.5 allows users to upload arbitrary files, which leads to remote command execution by posting to a /products URI with PHP code in a .php file with the image/jpeg content type.

Exploits (1)

exploitdb WORKING POC
by Renos Nikolaou · textwebappsphp
https://www.exploit-db.com/exploits/45253

This exploit demonstrates an arbitrary file upload vulnerability in UltimatePOS 2.5, allowing remote code execution by uploading a malicious PHP file disguised as an image. The attacker intercepts and modifies the upload request to change the file extension from .jpg to .php, enabling execution of system commands via a GET parameter.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: UltimatePOS 2.5
Auth required
Prerequisites: Valid low-privilege user credentials · Access to the product management interface · Ability to intercept and modify HTTP requests (e.g., via Burp Suite or Fiddler)
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (1)

Core 1
Core References
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/45253/

Scores

CVSS v3 8.8
EPSS 0.0307
EPSS Percentile 85.9%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-434
Status published
Products (1)
ultimatefosters/ultimatepos 2.5
Published Sep 17, 2018
Tracked Since Feb 18, 2026