CVE-2019-17132

CRITICAL

vBulletin <= 5.5.4 - Remote Code Execution via Custom Avatar Handling

Title source: llm

Exploitation Summary

EIP tracks 1 public exploit for CVE-2019-17132. PoCs published by EgiX.

AI-analyzed exploit summary This exploit leverages improper input validation in vBulletin's avatar update functionality to achieve remote code execution by uploading a malicious PHP file. It requires authentication and the 'Save Avatars as Files' option to be enabled.

Description

vBulletin through 5.5.4 mishandles custom avatars.

Exploits (1)

exploitdb WORKING POC

by EgiX · phpwebappsphp

https://www.exploit-db.com/exploits/47475

View Code ZIP pw:eip

This exploit leverages improper input validation in vBulletin's avatar update functionality to achieve remote code execution by uploading a malicious PHP file. It requires authentication and the 'Save Avatars as Files' option to be enabled.

Classification

Working Poc 100%

Attack Type

Rce

Complexity

Moderate

Reliability

Reliable

Target: vBulletin <= 5.5.4

Auth required

Prerequisites: Valid user credentials · 'Save Avatars as Files' option enabled

MITRE ATT&CK

T1190 - Exploit Public-Facing Application T1203 - Exploitation for Client Execution

devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3

Core References

Vendor Advisory x_refsource_misc

https://forum.vbulletin.com/forum/vbulletin-announcements/vbulletin-announcements_aa/4423646-vbulletin-5-5-x-5-5-2-5-5-3-and-5-5-4-security-patch-level-2

Third Party Advisory mailing-list x_refsource_fulldisc

http://seclists.org/fulldisclosure/2019/Oct/9

Third Party Advisory x_refsource_misc

http://packetstormsecurity.com/files/154759/vBulletin-5.5.4-Remote-Code-Execution.html

Scores

CVSS v3 9.8

EPSS 0.1178

EPSS Percentile 95.5%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE

CWE-94 CWE-20

Status published

Products (1)

vbulletin/vbulletin < 5.5.4

Published Oct 04, 2019

Tracked Since Feb 18, 2026