CVE•Published 2017-01-31•Modified 2026-05-13•1 article on news•6 live references•NVD data
CVE-2016-9420Mybb · Merge_system
Vulnerability data via NVD (ingested)
CVSS v3.1
9.8
CRITICAL
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
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Weaknesses (CWE)
Description
MyBB (aka MyBulletinBoard) before 1.8.8 and MyBB Merge System before 1.8.8 allow remote attackers to have unspecified impact via vectors related to "loose comparison false positives."
Timeline
Published 2017-01-31
Modified 2026-05-13
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2016-9420Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Mybb Merge System"All exposed Mybb Merge System instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Merge System"HTTP body or banner mentions "Merge System" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2016-9420Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2016-9420Censys host search filtered to this CVE id.
grep.app
CVE-2016-9420Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2016-9420GitHub code search for direct mentions.
Google dork
"CVE-2016-9420" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2016-9420 on GitHub.