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Case File

CVE-2017-17671

CRITICAL · CVSS 9.8 EPSS 3.05% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2017-12-14 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. It affects Windows, Apache. Public exploit code or proof-of-concept references have been detected in its references. It may be remotely exploitable.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
code execution

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2017-17671
Severity
CRITICAL
CVSS
9.8
EPSS
3.05%
Windows Apache

Original NVD Description

vBulletin through 5.3.x on Windows allows remote PHP code execution because a require_once call is reachable with an unauthenticated request that can include directory traversal sequences to specify an arbitrary pathname, and because ../ traversal is blocked but ..\ traversal is not blocked. For example, an attacker can make an invalid HTTP request containing PHP code, and then make an index.php?routestring= request with enough instances of ".." to reach an Apache HTTP Server log file.

Related CVEs

Other vulnerabilities affecting the same vendor(s)