Critical severity9.8NVD Advisory· Published Jan 31, 2017· Updated Jun 17, 2026

CVE-2016-9412

Description

MyBB (aka MyBulletinBoard) before 1.8.7 and MyBB Merge System before 1.8.7 allow attackers to have unspecified impact via vectors related to low adminsid and sid entropy.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

MyBB/Merge System2 versions
cpe:2.3:a:mybb:merge_system:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:mybb:merge_system:*:*:*:*:*:*:*:*range: <=1.8.6
- (no CPE)range: <1.8.7
MyBB/Mybb2 versions
cpe:2.3:a:mybb:mybb:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:mybb:mybb:*:*:*:*:*:*:*:*range: <=1.8.6
- (no CPE)range: <1.8.7

Patches

Vulnerability mechanics

References

www.openwall.com/lists/oss-security/2016/11/10/8nvdMailing ListPatchThird Party Advisory
www.openwall.com/lists/oss-security/2016/11/18/1nvdMailing ListPatchThird Party Advisory
blog.mybb.com/2016/03/11/mybb-1-8-7-merge-system-1-8-7-release/nvdPatchRelease NotesVendor Advisory
www.securityfocus.com/bid/94395nvdThird Party AdvisoryVDB Entry

News mentions

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cvss	0.637
epss	0.002
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000