Is CVE-2006-4272 actively exploited?

No active exploitation of CVE-2006-4272 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2006-4272 be exploited remotely?

Yes. CVE-2006-4272 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2006-4272?

CVE-2006-4272 has a CVSS score of 7.5 (HIGH).

HOME VULNERABILITIESCVE-2006-4272

HIGH

CVE-2006-4272

NVD-CWE-OtherPublished: August 21, 2006· Updated: Jun 16, 2026

7.5

CVSS v3.1

Official Description

Jelsoft vBulletin 3.5.4 allows remote attackers to register multiple arbitrary users and cause a denial of service (resource consumption) via a large number of requests to register.php. NOTE: the vendor has disputed this vulnerability, stating "If you have the CAPTCHA enabled then the registrations wont even go through. ... if you are talking about the flood being allowed in the first place then surely this is something that should be handled at the server level.

NVD Source

Technical Analysis

CVE-2006-4272 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.