The install/upgrade.php scripts in vBulletin 4.1 and 5 allow remote attackers to create administrative accounts via the customerid, htmldat…

published 2013-10-19 13y ago modified 2026-06-17 4mo ago also EUVD-2013-5958

cvss: 7.5; version 2.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 51.9%; EPSS 51.9% chance of exploitation in 30 days, percentile 98%
public exploits: 2; Metasploit and Exploit-DB

The install/upgrade.php scripts in vBulletin 4.1 and 5 allow remote attackers to create administrative accounts via the customerid, htmldata[password], htmldata[confirmpassword], and htmldata[email] parameters, as exploited in the wild in October 2013.

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Timeline

2013-10-09 First public exploit (Metasploit auxiliary/admin/http/vbulletin_upgrade_admin)
2013-10-19 Published

Exploit prediction

51.89% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

Metasploit auxiliary/admin/http/vbulletin_upgrade_admin vBulletin Administrator Account Creation metasploit auxiliary, normal rank, 2013-10-09
EDB-38785 vBulletin 4.1.x - '/install/upgrade.php' Security Bypass webapps, 2013-10-13
net-security.org http://www.net-security.org/secworld.php?id=15743 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	2.0	7.5	AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness

CWE-264 Permissions, Privileges, and Access Controls

References

Sources

CVE List CVE-2013-6129
NVD CVE-2013-6129

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