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Vulnerability record · public intelligence
CVE-2016-9412
CRITICAL
CVE-2016-9412
Published Jan 31, 2017 · Updated Oct 23, 2026
Severity · CVSSCRITICAL · 9.8
Known exploitationNot listed
EPSS / likelihood2.17%
QFinch risk score20 / 100
Original summary
Normalized public record · Updated Oct 23, 2026
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.
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
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.
Evidence: public source recordsAffected products
| Affected package, product or range | Fix status |
|---|---|
| Consult the referenced vendor advisory for affected versions. | Consult source advisory |
Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.
Remediation
Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.
- Confirm the affected product and reachable code path exist in your environment.
- Apply the vendor-supported patch or mitigation from the primary advisory.
- Rescan the exact deployed revision and retain verification evidence.
Evidence coverage
CVENVDEPSS
- SSVC priority
- MEDIUM
- Confidence
- 20%
- Aliases
- None reported
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
- 94395 ↗
- [oss-security] 20161117 Re: CVE request: MyBB multiple vulnerabilities ↗
- [oss-security] 20161110 CVE request: MyBB multiple vulnerabilities ↗
- blog.mybb.com ↗
Record history
Published Jan 31, 2017 · Last refreshed Oct 23, 2026