CVE-2011-10018: myBB Group Forum Software

myBB 1.6.4 Backdoor Arbitrary Command Execution

CVSS 10.0 CriticalCriticalEPSS 0.030 · 87th percentile

Critical, because:

CVSS score 10.0: 9.0 or more.

Published by the CVE Program (CNA: VulnCheck) at 13 Aug 2025, 20:35 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
myBB Group	Forum Software	affected 1.6.4 Other versions: unaffected

Identifiers

CVE-2011-10018

CNA

VulnCheck

Weakness (CWE)

CWE-94 · CWE-912

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
10.0	Critical	4.0	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	CNA (VulnCheck)

CISA KEV Not listed.
EPSS 0.030, the 87th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 13 Aug 2025. New records show when each source confirmed them.

Sources

References from the CNA

web.archive.org/web/20111015224948/http://secunia.com/advisories/46300/ third-party-advisory
blog.mybb.com/2011/10/06/1-6-4-security-vulnerabilit/ vendor-advisorypatch
www.vulncheck.com/advisories/mybb-backdoor-arbitrary-command-execution third-party-advisory
raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/webapp/mybb_backdoor.rb exploit
www.exploit-db.com/exploits/17949 exploit

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.