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Case File

CVE-2017-17672

CRITICAL · CVSS 9.8 EPSS 15.19% Public Exploit

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

Field Assessment

AI analysis pending.

Exhibit — Public Exploit Signal

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

Detected Signals
exploit code execution
External Security References

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

CVE
CVE-2017-17672
Severity
CRITICAL
CVSS
9.8
EPSS
15.19%

Original Filing — NVD Description

In vBulletin through 5.3.x, there is an unauthenticated deserialization vulnerability that leads to arbitrary file deletion and, under certain circumstances, code execution, because of unsafe usage of PHP's unserialize() in vB_Library_Template's cacheTemplates() function, which is a publicly exposed API. This is exploited with the templateidlist parameter to ajax/api/template/cacheTemplates.