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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2011-10018 Detail

Description

myBB version 1.6.4 was distributed with an unauthorized backdoor embedded in the source code. The backdoor allowed remote attackers to execute arbitrary PHP code by injecting payloads into a specially crafted collapsed cookie. This vulnerability was introduced during packaging and was not part of the intended application logic. Exploitation requires no authentication and results in full compromise of the web server under the context of the web application.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  VulnCheck
CVSS-B 10.0 CRITICAL
Vector:  CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://blog.mybb.com/2011/10/06/1-6-4-security-vulnerabilit/ VulnCheck Vendor Advisory 
https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/webapp/mybb_backdoor.rb CISA-ADP, VulnCheck Product 
https://web.archive.org/web/20111015224948/http://secunia.com/advisories/46300/ VulnCheck Third Party Advisory 
https://www.exploit-db.com/exploits/17949 CISA-ADP, VulnCheck Exploit 
https://www.vulncheck.com/advisories/mybb-backdoor-arbitrary-command-execution VulnCheck Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-94 Improper Control of Generation of Code ('Code Injection') VulnCheck  
CWE-912 Hidden Functionality VulnCheck  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2011-10018
NVD Published Date:
08/13/2025
NVD Last Modified:
08/14/2025
Source:
VulnCheck